Index (man pages section 3: Basic Library Functions)

man pages section 3: Basic Library Functions


Numbers and Symbols

	__fbufsize — interfaces to stdio FILE structure ( )

	__flbf — interfaces to stdio FILE structure ( )

	__fpending — interfaces to stdio FILE structure ( )

	__fpurge — interfaces to stdio FILE structure ( )

	__freadable — interfaces to stdio FILE structure ( )

	__freading — interfaces to stdio FILE structure ( )

	__fsetlocking — interfaces to stdio FILE structure ( )

	__fwritable — interfaces to stdio FILE structure ( )

	__fwriting — interfaces to stdio FILE structure ( )


A

	abort — terminate the process abnormally ( )

	abs — return absolute value of integer ( )

	accounting, time accounting for current process — times ( )

	acquire and release stream lock — flockfile ( )
		funlockfile ( )

	additional severities, define — addsev ( )

	address of symbol, get address in shared object or executable — dlsym ( )

	addsev — define additional severities ( )

	addseverity — build a list of severity levels for an application for use with fmtmsg ( )

	alarm, schedule signal after interval in microseconds — ualarm ( )

	allocation cache manipulation — umem_cache_alloc ( )

	allocation cache manipulation — umem_cache_create ( )

	allocation cache manipulation — umem_cache_destroy ( )

	allocation cache manipulation — umem_cache_free ( )

	alphasort — scan a directory ( )

	applications
		build a list of severity levels for use with fmtmsg — addseverity ( )
		display a message on stderr or system console — fmtmsg ( )
		get entries from symbol table — nlist ( )

	arithmetic, compute the quotient and remainder — div ( )

	arithmetic, 48-bit integer, generate uniformly distributed pseudo-random numbers — drand48 ( )

	ascftime — convert date and time to string ( )

	assert — verify program assertion ( )

	associate a stream with a file descriptor — fdopen ( )

	atexit — register a function to run at process termination or object unloading ( )

	atof — convert string to double-precision number ( )

	atoi — string conversion routines ( )

	atol — string conversion routines ( )

	atoll — string conversion routines ( )

	attropen — open a file ( )


B

	base-64 ASCII characters
		convert from long integer — l64a ( )
		convert to long integer — a64l ( )

	basename — return the last element of path name ( )

	bcmp — operates on variable length strings of bytes ( )

	bcopy — operates on variable length strings of bytes ( )

	binary input — fread ( )

	binary output — fwrite ( )

	binary search of sorted table, — bsearch ( )

	binary search trees, manage
		— tdelete ( )
		— tfind ( )
		— tsearch ( )
		— twalk ( )

	bind_textdomain_codeset — message handling functions ( )

	bindtextdomain — message handling functions ( )

	bit and byte operations, find first set bit — ffs ( )

	bsd_signal — simplified signal facilities ( )

	bsdmalloc — memory allocator ( )

	bsearch — binary search a sorted table ( )

	bstring — bit and byte string operations ( )

	btowc — single-byte to wide-character conversion ( )

	buffering, assign to stream
		— setbuffer ( )
		— setlinebuf ( )

	byte swap — swab ( )

	bzero — operates on variable length strings of bytes ( )


C

	C Compilation
		close a shared object — dlclose ( )
		create new file from dynamic object component — dldump ( )
		get address of symbol in shared object or executable — dlsym ( )
		get diagnostic information — dlerror ( )
		open a shared object — dlopen ( )

	catclose — close a message catalog ( )

	catgets — read a program message ( )

	catopen — open a message catalog ( )

	cfgetispeed — get input baud rate ( )

	cfgetospeed — get output baud rate ( )

	cfsetispeed — set input baud rate ( )

	cfsetospeed — set output baud rate ( )

	cftime — convert date and time to string ( )

	character handling
		— ctype ( )
		— isalnum ( )
		— isalpha ( )
		— isascii ( )
		— iscntrl ( )
		— isdigit ( )
		— isgraph ( )
		— islower ( )
		— isprint ( )
		— ispunct ( )
		— isspace ( )
		— isupper ( )
		— isxdigit ( )

	clock — report CPU time used ( )

	close or iterate over open file descriptors — closefrom ( )

	close or iterate over open file descriptors — fdwalk ( )

	close a directory stream — closedir ( )

	close a shared object — dlclose ( )

	close a stream — fclose ( )

	closedir — close a directory stream ( )

	closefrom — close or iterate over open file descriptors ( )

	closelog — control system log ( )

	code conversion allocation function — iconv_open ( )

	code conversion deallocation function — iconv_close ( )

	code conversion for Process Code and File Code
		— strtows ( )
		— wstostr ( )

	code conversion function — iconv ( )

	column positions of a wide-character code — wcwidth ( )

	column positions of a wide-character string — wcswidth ( )

	command options, get option letter from argument vector — getopt ( )

	command suboptions, parse suboptions from a string — getsubopt ( )

	compare wide-characters in memory — wmemcmp ( )

	compile and execute regular expressions
		— re_comp ( )
		— re_exec ( )

	confstr — get configurable variables ( )

	control system log
		— closelog ( )
		— openlog ( )
		— setlogmask ( )
		— syslog ( )

	convert date and time to string — strftime ( )

	convert formatted input — fscanf ( )

	convert formatted input — scanf ( )

	convert formatted input — sscanf ( )

	convert formatted input — vfscanf ( )

	convert formatted input — vscanf ( )

	convert formatted input — vsscanf ( )

	convert formatted wide-character input — fwscanf ( )

	convert formatted wide-character input — swscanf ( )

	convert formatted wide-character input — vfwscanf ( )

	convert formatted wide-character input — vswscanf ( )

	convert formatted wide-character input — vwscanf ( )

	convert formatted wide-character input — wscanf ( )

	convert string to unsigned long — strtoul ( )

	convert wide character string to double-precision number — wcstod ( )

	convert date and time to string — strftime
		ascftime ( )
		cftime ( )

	convert wide character string to double-precision number — watof, watof ( )

	convert wide character string to double-precision number — wstod, wstod ( )

	convert a character string to a wide-character string — mbstowcs ( )

	convert a character string to a wide-character string (restartable) — mbsrtowcs ( )

	convert a character to a wide-character code — mbtowc ( )

	convert a character to a wide-character code (restartable) — mbrtowc ( )

	convert a wide-character code to a character — wctomb ( )

	convert a wide-character code to a character (restartable) — wcrtomb ( )

	convert a wide-character string to a character string — wcstombs ( )

	convert a wide-character string to a character string (restartable) — wcsrtombs ( )

	convert date and time to wide character string — wcsftime ( )

	convert floating-point number to string
		— ecvt ( )
		— fcvt ( )
		— gcvt ( )

	convert monetary value to string —strfmon ( )

	convert numbers to strings
		— econvert ( )
		— fconvert ( )
		— fprintf ( )
		— gconvert ( )
		— printf ( )
		— qeconvert ( )
		— qfconvert ( )
		— qgconvert ( )
		— seconvert ( )
		— sfconvert ( )
		— sgconvert ( )
		— sprintf ( )
		— vfprintf ( )
		— vprintf ( )

	convert string to double-precision number
		— atof ( )
		— strtod ( )

	convert to wchar_t strings, wsprintf ( )

	convert wide character string to unsigned long — wcstoul ( )

	copy wide-characters in memory — wmemcpy ( )

	copy wide-characters in memory with overlapping areas — wmemmove ( )

	CPU time, report for calling process — clock ( )

	CPU-use, prepare execution profile — monitor ( )

	create a temporary file — tmpfile ( )

	create new file from dynamic object component — dldump ( )

	crypt — string encoding function ( )

	cset — get information on EUC codesets ( )

	csetcol — get information on EUC codesets ( )

	csetlen — get information on EUC codesets ( )

	csetno — get information on EUC codesets ( )

	ctermid — generate path name for controlling terminal ( )

	ctermid_r — generate path name for controlling terminal ( )

	ctype — character handling ( )

	current location of a named directory stream — telldir ( )

	current working directory, get pathname — getcwd ( )

	cuserid — get character-string representation of login name of user ( )


D

	data base subroutines — dbm ( )
		dbmclose ( )
		dbminit ( )
		delete ( )
		fetch ( )
		firstkey ( )
		nextkey ( )
		store ( )

	database functions — dbm_clearerr ( )

	database functions — dbm_close ( )

	database functions — dbm_delete ( )

	database functions — dbm_error ( )

	database functions — dbm_fetch ( )

	database functions — dbm_firstkey ( )

	database functions — dbm_nextkey ( )

	database functions — dbm_open ( )

	database functions — dbm_store ( )

	database functions — ndbm ( )

	date and time
		convert to string — asctime ( )
		convert to string — asctime_r ( )
		convert to string — ctime ( )
		convert to string — ctime_r ( )
		convert to string — gmtime ( )
		convert to string — gmtime_r ( )
		convert to string — localtime ( )
		convert to string — localtime_r ( )
		convert to string — tzset ( )
		convert user format date and time — getdate ( )
		— gettimeofday ( ) ( )

	date and time conversion — strptime ( )

	dbm — data base subroutines ( )

	dbm_clearerr — database functions ( )

	dbm_close — database functions ( )

	dbm_delete — database functions ( )

	dbm_error — database functions ( )

	dbm_fetch — database functions ( )

	dbm_firstkey — database functions ( )

	dbm_nextkey — database functions ( )

	dbm_open — database functions ( )

	dbm_store — database functions ( )

	dbmclose — data base subroutines ( )

	dbminit — data base subroutines ( )

	dcgettext — message handling functions ( )

	dcngettext — message handling functions ( )

	debugging features of the umem library — umem_debug ( )

	debugging memory allocator
		— calloc ( )
		— cfree ( )
		— free ( )
		— mallinfo ( )
		— malloc ( )
		— mallopt ( )
		— memalign ( )
		— realloc ( )
		— valloc ( )

	decimal record from double-precision floating — double_to_decimal ( )

	decimal record from extended-precision floating — extended_to_decimal ( )

	decimal record from quadruple-precision floating — quadruple_to_decimal ( )

	decimal record from single-precision floating — single_to_decimal ( )

	decimal record to double-precision floating — decimal_to_double ( )

	decimal record to extended-precision floating — decimal_to_extended ( )

	decimal record to quadruple-precision floating — decimal_to_quadruple ( )

	decimal record to single-precision floating — decimal_to_single ( )

	decimal_to_double — decimal record to double-precision floating ( )

	decimal_to_extended — decimal record to extended-precision floating ( )

	decimal_to_quadruple — decimal record to quadruple-precision floating ( )

	decimal_to_single — decimal record to single-precision floating ( )

	decompose floating-point number
		— modf ( )
		— modff ( )

	define character class — wctype ( )

	define character mapping — wctrans ( )

	define default catalog — setcat ( )

	define the label for pfmt() and lfmt(). — setlabel ( )

	delete — data base subroutines ( )

	detach a name from a STREAMS-based file descriptor — fdetach ( )

	determine conversion object status — mbsinit ( )

	determine if address is within stack boundaries — stack_inbounds ( )

	determine stack boundary violation event — stack_violation ( )

	device number, manage — makedev, major, minor ( )

	dgettext — message handling functions ( )

	difftime — computes the difference between two calendar times ( )

	directio — provide advice to file system ( )

	directories
		get current working directory pathname — getwd ( )
		get pathname of current working directory — getcwd ( )

	directory operations
		— alphasort ( )
		— scandir ( )

	dirname — report parent directory name of file path name ( )

	display error message in standard format — pfmt ( )

	display error message in standard format and pass to logging and monitoring services — lfmt ( )

	display error message in standard format and pass to logging and monitoring services — vlfmt ( )

	display error message in standard format and pass to logging and monitoring services — vpfmt ( )

	div — compute quotient and remainder ( )

	division and remainder operations
		— div ( )
		— ldiv ( )

	dladdr — translate address to symbolic information ( )

	dladdr1 — translate address to symbolic information ( )

	dlclose — close a shared object ( )

	dldump — create new file from dynamic object component of calling process ( )

	dlerror — get diagnostic information ( )

	dlinfo — dynamic load information ( )

	dlopen — open a shared object ( )

	dlsym — get address of symbol in shared object or executable ( )

	dngettext — message handling functions ( )

	double_to_decimal — decimal record from double-precision floating ( )

	dup2 — duplicate an open file descriptor ( )

	duplicate an open file descriptor — dup2 ( )

	dynamic linking
		close a shared object — dlclose ( )
		create new file from dynamic object component — dldump ( )
		get address of symbol in shared object or executable — dlsym ( )
		get diagnostic information — dlerror ( )
		open a shared object — dlopen ( )

	dynamic load information — dlinfo ( )


E

	econvert — convert number to ASCII ( )

	edata — last location in program ( )

	end — last location in program ( )

	endgrent — group database entry functions ( )

	endpwent — get password entry from user database ( )

	endspent — get shadow password database entry ( )

	endusershell() — function ( )

	endutent — user accounting database functions ( )

	endutxent — user accounting database functions ( )

	environment name, return value — getenv ( )

	environment variables, change or add value — putenv ( )

	error messages, get string — strerror ( )

	error messages, system, print — perror ( )

	etext — last location in program ( )

	EUC character bytes, — euclen ( )

	EUC characters, convert a string of Process Code characters to EUC characters and put it on a stream — putws ( )

	EUC codeset, get information, — getwidth ( )

	EUC codesets, get information
		— cset ( )
		— csetcol ( )
		— csetlen ( )
		— csetno ( )
		— wcsetno ( )

	EUC display width
		— euccol ( )
		— eucscol ( )

	euccol — get EUC character display width ( )

	euclen — get EUC byte length ( )

	eucscol — get EUC string display width ( )

	exit — terminate process ( )

	express an intention to extend the stack — _stack_grow ( )

	extended_to_decimal — decimal record from extended-precision floating ( )

	Extended Unix Code
		See EUC

	extract mantissa and exponent from double precision number — frexp ( )


F

	fast, scalable memory allocation — umem_alloc ( )

	fast, scalable memory allocation — umem_free ( )

	fast, scalable memory allocation — umem_nofail_callback ( )

	fast, scalable memory allocation — umem_zalloc ( )

	fattach — attach a STREAMS-based file descriptor to an object in the file system name space ( )

	fclose — close a stream ( )

	fconvert — convert number to ASCII ( )

	FD_CLR — synchronous I/O multiplexing ( )

	FD_ISSET — synchronous I/O multiplexing ( )

	FD_SET — synchronous I/O multiplexing ( )

	FD_ZERO — synchronous I/O multiplexing ( )

	fdetach — detach a name from a STREAMS-based file descriptor ( )

	fdopen — associate a stream with a file descriptor ( )

	fdopendir — open directory ( )

	fdwalk — close or iterate over open file descriptors ( )

	fetch — data base subroutines ( )

	fflush — flush a stream ( )

	ffs — find first set bit ( )

	fgetc — get a byte from a stream ( )

	fgetgrent — group database entry functions ( )

	fgetgrent_r — group database entry functions ( )

	fgetpos — get current file position information ( )

	fgetpwent — get password entry from a file ( )

	fgetpwent_r — get password entry from a file ( )

	fgetspent — get shadow password database entry ( )

	fgetspent_r — get shadow password database entry(reentrant) ( )

	fgetwc — get a wide-character code from a stream ( )

	fgetws — get a wide-character string from a stream ( )

	file descriptor
		duplicate an open one — dup2 ( )
		STREAMS-based, attach to an object in file system name space — fattach ( )
		test for a STREAMS file — isastream ( )

	file descriptors, apply or remove advisory lock on open file — flock ( )

	file name, make a unique one — mktemp ( )

	make a unique file name — mkstemp ( )

	file pointer in a stream, reposition — fsetpos, fgetpos ( )

	file_to_decimal — decimal record from character stream ( )

	file tree
		recursively descend — ftw ( )
		recursively descend — nftw ( )

	files
		allows sections of file to be locked — lockf ( )
		optimizing usage of files — directio ( )
		— remove ( )
		report parent directory of file path name — dirname ( )
		set a file to a specified length — truncate ( )

	find a wide-character in memory — wmemchr ( )

	find a wide-character substring — wcsstr ( )

	find pathname of a terminal
		— ttyname ( )
		— ttyname_r ( )

	firstkey — data base subroutines ( )

	floating-point number, convert to string — ecvt ( )

	floating-point number, determine type
		— finite ( )
		— fpclass ( )
		— isnan ( )
		— isnand ( )
		— isnanf ( )
		— unordered ( )

	flock — apply or remove an advisory lock on an open file ( )

	flockfile — acquire and release stream lock ( )

	flush a stream — fflush ( )

	flush non-transmitted output data, non-read input data or both — tcflush ( )

	_flushlbf — interfaces to stdio FILE structure ( )

	fmtmsg — display a message on stderr or system console ( )

	fnmatch — match filename or path name ( )

	fopen — open a stream ( )

	fopen — open stream ( )

	formatted input conversion — wsscanf ( )

	formatted output conversion
		— fprintf ( )
		— printf ( )
		— sprintf ( )
		— vfprintf ( )
		— vprintf ( )
		— vsprintf ( )

	fpgetmask — IEEE floating-point environment control ( )

	fpgetround — IEEE floating-point environment control ( )

	fpgetsticky — IEEE floating-point environment control ( )

	fprintf — formatted output conversion ( )

	fprintf — print formatted output ( )

	fpsetmask — IEEE floating-point environment control ( )

	fpsetround — IEEE floating-point environment control ( )

	fpsetsticky —IEEE floating-point environment control ( )

	fputc — put a byte on a stream ( )

	fputwc — put wide-character code on a stream ( )

	fputws — put wide character string on a stream ( )

	fread — binary input ( )

	free — memory allocator ( )

	freopen — open a stream ( )

	freopen — open stream ( )

	frexp — extract mantissa and exponent from double precision number ( )

	fscanf — convert formatted input ( )

	fseek — reposition a file-position indicator in a stream ( )

	fseeko — reposition a file-position indicator in a stream ( )

	fsetpos — reposition a file pointer in a stream ( )

	fsync — synchronize changes to a file ( )

	ftell — return a file offset in a stream ( )

	ftello — return a file offset in a stream ( )

	ftime — get date and time ( )

	ftruncate — set a file to a specified length ( )

	ftw — walk a file tree ( )

	func_to_decimal — decimal record from character function ( )

	funlockfile — acquire and release stream lock ( )

	fwide — set stream orientation ( )

	fwprintf — print formatted wide-character output ( )

	fwrite — binary output ( )

	fwscanf — convert formatted wide-character input ( )


G

	gconvert — convert number to ASCII ( )

	general terminal interface, — termios ( )

	generate path name for controlling terminal
		— ctermid ( )
		— ctermid_r ( )

	generate path names matching a pattern
		— glob ( )
		— globfree ( )

	get a wide-character string from a stream — fgetws ( )

	get a wide-character string from a stream — getws ( )

	get mnttab file information — getextmntent ( )

	get mnttab file information — getmntany ( )

	get mnttab file information — getmntent ( )

	get mnttab file information — hasmntopt ( )

	get mnttab file information — putmntent ( )

	get mnttab file information — resetmnttab ( )

	get a byte from a stream
		— fgetc ( )
		— getc ( )
		— getc_unlocked ( )
		— getchar ( )
		— getchar_unlocked ( )
		— getw ( )

	get a wide-character code from a stream — fgetwc ( )

	get address of symbol in shared object or executable — dlsym ( )

	get an identifier for the current host — gethostid ( )

	get configurable variables — confstr ( )

	get current file position information — fgetpos ( )

	get diagnostic information — dlerror ( )

	get foreground process group ID — tcgetpgrp ( )

	get input baud rate, — cfgetispeed ( )

	get name of signal — strsignal ( )

	get number of bytes in a character — mblen ( )

	get number of bytes in a character (restartable) — mbrlen ( )

	get or set process scheduling priority
		— getpriority ( )
		— setpriority ( )

	get output baud rate, — cfgetospeed ( )

	get process group ID for session leader for controlling terminal — tcgetsid ( )

	get system load averages — getloadavg ( )

	get system load averages for a processor set — pset_getloadavg ( )

	get the parameters associated with the terminal — tcgetattr ( )

	get wide character from a stream — getwc ( )

	get wide character from stdin stream — getwchar ( )

	getc — get a byte from a stream ( )

	getc_unlocked — get a byte from a stream ( )

	getchar — get a byte from a stream ( )

	getchar_unlocked — get a byte from a stream ( )

	getcpuid — obtain information on scheduling decisions ( )

	getcwd — get pathname of current working directory ( )

	getdate — convert user format date and time ( )
		General Specifications ( )
		Internal Format Conversion ( )
		Modified Conversion Specifications ( )

	getenv — return value for environment name ( )

	getexecname — return pathname of executable ( )

	getextmntent — get mnttab file information ( )

	getgrent — group database entry functions ( )

	getgrent_r — group database entry functions ( )

	getgrgid — group database entry functions ( )

	getgrgid_r — group database entry functions ( )

	getgrnam — group database entry functions ( )

	getgrnam_r — group database entry functions ( )

	gethomelgroup — obtain information on scheduling decisions ( )

	gethostid — get an identifier for the current host ( )

	gethostname — get name of current host ( )

	gethrtime — get high resolution real time ( )

	gethrvtime — get high resolution virtual time ( )

	getloadavg — get system load averages ( )

	getlogin — get login name ( )

	getlogin_r — get login name ( )

	getmntany — get mnttab file information ( )

	getmntent — get mnttab file information ( )

	getopt — get option letter from argument vector ( )

	getpagesize — get system page size ( )

	getpass — read a string of characters without echo ( )

	getpassphrase — read a string of characters without echo ( )

	getpriority — get or set process scheduling priority ( )

	getpw — get passwd entry from UID ( )

	getpwent — get password entry from user database ( )

	getpwent_r — get password entry from user database ( )

	getpwnam — get password entry from user database ( )

	getpwnam_r — get password entry from user database ( )

	getpwuid — get password entry from user database ( )

	getpwuid_r — get password entry from user database ( )

	getrusage — get information about resource utilization ( )

	getspent — get shadow password database entry ( )

	getspent_r — get shadow password database entry (reentrant) ( )

	getspnam — get shadow password database entry ( )

	getspnam_r — get shadow password database entry (reentrant) ( )

	getsubopt — parse suboptions from a string ( )

	gettext — message handling functions ( )

	gettimeofday — get date and time ( )

	gettimeofday — get system's notion of current Greenwich time ( )

	gettxt — retrieve a text string ( )

	getusershell() — get legal user shells ( )

	getutent — user accounting database functions ( )

	getutid — user accounting database functions ( )

	getutline — user accounting database functions ( )

	getutmp — user accounting database functions ( )

	getutmpx — user accounting database functions ( )

	getutxent — user accounting database functions ( )

	getutxid — user accounting database functions ( )

	getutxline — user accounting database functions ( )

	getvfsany — get vfstab file entry ( )

	getvfsent — get vfstab file entry ( )

	getvfsfile — get vfstab file entry ( )

	getvfsspec — get vfstab file entry ( )

	getw — get a byte from a stream ( )

	getwc — get wide character from a stream ( )

	getwchar — get wide character from stdin stream ( )

	getwd — get current working directory pathname ( )

	getwidth — get codeset information ( )

	getws — get a wide-character string from a stream ( )

	glob — generate path names matching a pattern ( )

	globfree — generate path names matching a pattern ( )

	grantpt — grant access to the slave pseudo-terminal device ( )

	group database entry functions — endgrent ( )

	group database entry functions — fgetgrent ( )

	group database entry functions — fgetgrent_r ( )

	group database entry functions — getgrent ( )

	group database entry functions — getgrent_r ( )

	group database entry functions — getgrgid ( )

	group database entry functions — getgrgid_r ( )

	group database entry functions — getgrnam ( )

	group database entry functions — getgrnam_r ( )

	group database entry functions — setgrent ( )

	group IDs, supplementary, initialize — initgroups ( )


H

	halt system processor, — reboot ( )

	hash-table search routine, — hsearch ( )

	hasmntopt — get mnttab file information ( )

	hcreate — create hash table ( )

	hdestroy — destroy hash table ( )

	host name
		get name of current host — gethostname ( )
		set name of current host — sethostname ( )

	hsearch — hash-table search routine ( )


I

	I/O multiplexing, synchronous, — select ( )

	I/O package, standard buffered I/O — stdio ( )

	iconv — code conversion function ( )

	iconv_close — code conversion deallocation function ( )

	iconv_open — code conversion allocation function ( )

	IEEE arithmetic, convert floating-point number to string — ecvt ( )

	IEEE floating-point environment control
		— fpgetmaks ( )
		— fpgetround ( )
		— fpgetsticky ( )
		— fpsetmask ( )
		— fpsetround ( )
		— fpsetsticky ( )

	index — string operations ( )

	initgroups — initialize the supplementary group access list ( )

	initstate — pseudorandom number functions ( )

	input conversion, convert from wchar_t string — wsscanf ( )

	input/output package, standard buffered I/O — stdio ( )

	insque — insert element to a queue ( )

	interfaces to stdio FILE structure — _flushlbf ( )

	interfaces to stdio FILE structure — __fbufsize ( )

	interfaces to stdio FILE structure — __flbf ( )

	interfaces to stdio FILE structure — __fpending ( )

	interfaces to stdio FILE structure — __fpurge ( )

	interfaces to stdio FILE structure — __freadable ( )

	interfaces to stdio FILE structure — __freading ( )

	interfaces to stdio FILE structure — __fsetlocking ( )

	interfaces to stdio FILE structure — __fwritable ( )

	interfaces to stdio FILE structure — __fwriting ( )

	invoke isa-specific executable — isaexec ( )

	isaexec — invoke isa-specific executable ( )

	isalnum — character handling ( )

	isalpha — character handling ( )

	isascii — character handling ( )

	isatty — test for a terminal device ( )

	isdigit — character handling ( )

	isenglish — wide-character code classification functions ( )

	isgraph — character handling ( )

	isideogram — wide-character code classification functions ( )

	islower — character handling ( )

	isnumber — wide-character code classification functions ( )

	isphonogram — wide-character code classification functions ( )

	isprint — character handling ( )

	ispunct — character handling ( )

	isspace — character handling ( )

	isspecial — wide-character code classification functions ( )

	isupper — character handling ( )

	iswalnum — wide-character code classification functions ( )

	iswalpha — wide-character code classification functions ( )

	iswascii — wide-character code classification functions ( )

	iswcntrl — wide-character code classification functions ( )

	iswctype — test character for specified class ( )

	iswdigit — wide-character code classification functions ( )

	iswgraph — wide-character code classification functions ( )

	iswlower — wide-character code classification functions ( )

	iswprint — wide-character code classification functions ( )

	iswpunct — wide-character code classification functions ( )

	iswspace — wide-character code classification functions ( )

	iswupper — wide-character code classification functions ( )

	iswxdigit — wide-character code classification functions ( )

	isxdigit — character handling ( )


K

	killpg — send signal to a process group ( )


L

	labs — return absolute value of long integer ( )

	language information — nl_langinfo ( )

	ldexp — load exponent of a floating point number ( )

	ldiv — compute quotient and remainder ( )

	lfmt — display error message in standard format and pass to logging and monitoring services ( )

	linear search and update routine
		— lfind ( )
		— lsearch ( )

	llabs — return absolute value of long long integer ( )

	lldiv — compute quotient and remainder ( )

	lltostr — string conversion routines ( )

	load exponent of a floating point number — ldexp ( )

	locale, modify and query a program's locale — setlocale ( )

	localeconv — get numeric formatting information ( )

	lock, apply or remove advisory lock on open file — flock ( )

	lock address space, — mlockall ( )

	lock memory pages, — mlock ( )

	lockf — allows sections of file to be locked ( )

	log message with a stdarg argument list — vsyslog ( )

	login name
		— getlogin ( )
		— getlogin_r ( )

	longjmp — non-local goto ( ) ( )

	_longjmp — non-local goto ( ) ( )


M

	madvise — provide advice to VM system ( )

	make a FIFO special file — mkfifo ( )

	make modified instructions executable — sync_instruction_memory ( )

	makecontext — manipulate user contexts ( )

	malloc — memory allocator ( )

	mallocctl — MT hot memory allocator ( )

	manipulate resource control blocks — rctlblk_get_enforced_value ( )

	manipulate resource control blocks — rctlblk_get_firing_time ( )

	manipulate resource control blocks — rctlblk_get_global_action ( )

	manipulate resource control blocks — rctlblk_get_global_flags ( )

	manipulate resource control blocks — rctlblk_get_local_action ( )

	manipulate resource control blocks — rctlblk_get_local_flags ( )

	manipulate resource control blocks — rctlblk_get_privilege ( )

	manipulate resource control blocks — rctlblk_get_recipient_pid ( )

	manipulate resource control blocks — rctlblk_get_value ( )

	manipulate resource control blocks — rctlblk_set_local_action ( )

	manipulate resource control blocks — rctlblk_set_local_flags ( )

	manipulate resource control blocks — rctlblk_set_privilege ( )

	manipulate resource control blocks — rctlblk_set_value ( )

	manipulate resource control blocks — rctlblk_size ( )

	manipulate sets of signals — sigsetops ( )
		sigaddset ( )
		sigdelset ( )
		sigemptyset ( )
		sigfillset ( )
		sigismember ( )

	match filename or path name — fnmatch ( )

	mblen — get number of bytes in a character ( )

	mbrlen — get number of bytes in a character (restartable) ( )

	mbrtowc — convert a character to a wide-character code (restartable) ( )

	mbsinit — determine conversion object status ( )

	mbsrtowcs — convert a character string to a wide-character string (restartable) ( )

	mbstowcs — convert a character string to a wide-character string ( )

	mbtowc — convert a character to a wide-character code ( )

	mctl — memory management control ( )

	memory — memory operations ( )

	memory, optimizing usage of user mapped memory — madvise ( )

	memory allocator — bsdmalloc ( )

	memory allocator
		— alloca ( )
		— calloc ( ) ( ) ( )

	memory allocator — bsdmalloc
		free ( )

	memory allocator
		— free ( ) ( ) ( )
		— mallinfo ( )

	memory allocator — bsdmalloc
		malloc ( )

	memory allocator
		— malloc ( ) ( ) ( )
		— mallopt ( )
		— memalign ( )

	memory allocator — bsdmalloc
		realloc ( )

	memory allocator
		— realloc ( ) ( ) ( )
		— valloc ( )

	memory lock or unlock, calling process — plock ( )

	memory management — mctl ( )

	memory management
		get system page size — getpagesize ( )
		lock address space — mlockall ( )
		lock pages in memory — mlock ( )
		synchronize memory with physical storage — msync ( )
		unlock address space — munlockall ( )
		unlock pages in memory — munlock ( )

	memory operations
		— memccpy ( )
		— memchr ( )
		— memcmp ( )
		— memcpy ( )
		— memmove ( )
		— memory ( )
		— memset ( )

	message handling functions — bindtextdomain ( )

	message handling functions — bind_textdomain_codeset ( )

	message handling functions — dcgettext ( )

	message handling functions — dcngettext ( )

	message handling functions — dgettext ( )

	message handling functions — dngettext ( )

	message handling functions — gettext ( )

	message handling functions — ngettext ( )

	message handling functions — textdomain ( )

	message catalog
		open/catalog — catopen, catclose ( )
		read a program message — catgets ( )

	messages
		display a message on stderr or system console — fmtmsg ( )
		print system error messages — perror ( )
		system signal messages — psignal ( )

	mkfifo — make a FIFO special file ( )

	mkstemp — make a unique file name ( )

	mktemp — make a unique file name ( )

	mktime — converts a tm structure to a calendar time ( )

	modf — decompose floating-point number ( )

	modff — decompose floating-point number ( )

	monitor — prepare process execution profile ( )

	msync — synchronize memory with physical storage ( )

	MT hot memory allocator — mallocctl ( )

	MT hot memory allocator — mtmalloc ( )

	mtmalloc — MT hot memory allocator ( )


N

	ndbm — database functions ( )

	network group entry
		— endnetgrent ( )
		— getnetgrent ( )
		— getnetgrent_r ( )
		— innetgr ( )
		— setnetgrent ( )

	nextkey — data base subroutines ( )

	nftw — walk a file tree ( )

	ngettext — message handling functions ( )

	nice — change priority of a process ( )

	nl_langinfo — language information ( )

	nlist — get entries from symbol table ( )

	non-local goto — setjmp ( ) ( )
		_longjmp ( )
		longjmp ( ) ( )
		_setjmp ( )
		siglongjmp ( )
		sigsetjmp ( )

	non-local goto
		— _longjmp ( )
		— _setjmp ( )

	numbers, convert to strings — econvert ( )


O

	obtain information on scheduling decisions — getcpuid ( )

	obtain information on scheduling decisions — gethomelgroup ( )

	offsetof — offset of structure member ( )

	open a shared object — dlopen ( )

	open directory — fdopendir ( )

	open directory — opendir ( )

	open a file — attropen ( )

	open a stream — fopen ( )

	open a stream — freopen ( )

	opendir — open directory ( )

	openlog — control system log ( )

	output conversion, wsprintf — convert to wchar_t string ( )

	output conversion, formatted
		— fprintf ( )
		— printf ( )
		— sprintf ( )
		— vfprintf ( )
		— vprintf ( )
		— vsprintf ( )


P

	page size, system, get — getpagesize ( )

	password databases
		lock the lock file — lckpwdf ( )
		unlock the lock file — ulckpwdf ( )

	passwords
		get password entry from a file — fgetpwent ( )
		get password entry from a file — fgetpwent_r ( )
		get password entry in user database — endpwent ( )
		get password entry in user database — getpwent ( )
		get password entry in user database — getpwent_r ( )
		get password entry in user database — getpwnam ( )
		get password entry in user database — getpwnam_r ( )
		get password entry in user database — getpwuid ( )
		get password entry in user database — getpwuid_r ( )
		get password entry in user database — setpwent ( )
		get passwd entry from UID — getpw ( )
		write password file entry — putpwent ( )

	passwords, shadow
		get shadow password database entry — endspent ( )
		get shadow password database entry — fgetspent ( )
		get shadow password database entry — getspent ( )
		get shadow password database entry — getspnam ( )
		get shadow password database entry — setspent ( )
		get shadow password database entry (reentrant) — fgetspent_r ( )
		get shadow password database entry (reentrant) — getspent_r ( )
		get shadow password database entry (reentrant) — getspnam_r ( )
		write shadow password file entry — putspent ( )

	path name, return last element — path name ( )

	pclose — initiate pipe to/from a process ( )

	perform word expansions
		— wordexp ( )
		— wordfree ( )

	perror — print system error messages ( )

	pfmt — display error message in standard format ( )

	pipes
		initiate to/from a process — pclose ( )
		initiate to/from a process — popen ( )

	plock — lock or unlock into memory process, text, or data ( )

	popen — initiate pipe to/from a process ( )

	print formatted output
		— fprintf ( )
		— printf ( )
		— snprintf ( )
		— sprintf ( )

	print formatted output of a variable argument list
		— vfprintf ( )
		— vprintf ( )
		— vsnprintf ( )
		— vsprintf ( )

	print formatted wide-character output
		— fwprintf ( )
		— swprintf ( )
		— wprintf ( )

	printf — formatted output conversion ( )

	printf — print formatted output ( )

	printstack — walk stack pointed to by ucontext ( )

	Process Code string operations — wstring ( )

	Process Code string operations — wscasecmp, wscasecmp ( )

	Process Code string operations — wscol, wscol ( )

	Process Code string operations — wsdup, wsdup ( )

	Process Code string operations — wsncasecmp, wsncasecmp ( )

	process statistics, prepare execution profile — monitor ( )

	processes
		change priority — nice ( )
		duplicate an open file descriptor — dup2 ( )
		generate path name for controlling terminal — ctermid, ctermid_r ( )
		get character-string representation — cuserid ( )
		initiate pipe to/from a process — popen, pclose ( )
		manipulate user contexts — makecontext, swapcontext ( )
		memory lock or unlock — plock ( )
		prepare execution profile — monitor ( )
		report CPU time used — clock ( )
		send signal to a process group — killpg ( )
		send signal to program — raise ( )
		suspend execution for interval — sleep ( )
		terminate process — exit ( )
		terminate the process abnormally — abort ( )
		wait for process to terminate or stop — WIFEXITED ( )
		wait for process to terminate or stop — WIFSIGNALED ( )
		wait for process to terminate or stop — WIFSTOPPED ( )
		wait for process to terminate or stop — wait ( )

	profiling utilities, prepare process execution profile — monitor ( )

	program assertion, verify — assert ( )

	program messages
		open/close a message catalog — catopen, catclose ( )
		read — catgets ( )

	programs, last locations — end, etext, edata ( )

	pset_getloadavg — get system load averages for a processor set ( )

	pseudo-terminal device
		get name of the slave pseudo-terminal device — ptsname ( )
		grant access to the slave pseudo-terminal device — grantpt ( )

	pseudorandom number functions
		— initstate ( )
		— random ( )
		— setstate ( )
		— srandom ( )

	psiginfo — system signal messages ( )

	psignal — system signal messages ( ) ( )

	pthread_atfork — register fork handlers ( )

	ptsname — get name of the slave pseudo-terminal device ( )

	push byte back into input stream — ungetc ( )

	push wide-character code back into input stream — ungetwc ( )

	put wide-character code on a stream — fputwc ( )

	put wide-character code on a stream — putwc ( )

	put wide-character code on a stream — putwchar ( )

	put a byte on a stream
		— fputc ( )
		— putc ( )
		— putc_unlocked ( )
		— putchar ( )
		— putchar_unlocked ( )
		— putw ( )

	put wide character string on a stream — fputws ( )

	putc — put a byte on a stream ( )

	putc_unlocked — put a byte on a stream ( )

	putchar — put a byte on a stream ( )

	putchar_unlocked — put a byte on a stream ( )

	putenv — change or add value to environment ( )

	putmntent — get mnttab file information ( )

	putpwent — write password file entry ( )

	putspent — write shadow password file entry ( )

	pututline — user accounting database functions ( )

	pututxline — user accounting database functions ( )

	putw — put a byte on a stream ( )

	putwc — put wide-character code on a stream ( )

	putwchar — put wide-character code on a stream ( )

	putws — convert a string of Process Code characters to EUC characters and put it on a stream ( )


Q

	qeconvert — convert number to ASCII ( )

	qfconvert — convert number to ASCII ( )

	qgconvert — convert number to ASCII ( )

	qsort — quick sort ( )

	quadruple_to_decimal — decimal record from quadruple-precision floating ( )

	queues, insert/remove element from a queue — insque, remque ( )


R

	raise — send signal to program ( )

	rand — simple random number generator ( )

	rand — simple random-number generator ( )

	random — pseudorandom number functions ( )

	random number generator
		— drand48 ( )
		— erand48 ( )
		— jrand48 ( )
		— lcong48 ( )
		— lrand48 ( )
		— mrand48 ( )
		— nrand48 ( )
		— rand ( )
		— seed48 ( )
		— srand48 ( )

	random number generator, simple
		— rand ( )
		— srand ( )

	rctl_walk — visit registered rctls on current system ( )

	rctlblk_get_enforced_value — manipulate resource control blocks ( )

	rctlblk_get_firing_time — manipulate resource control blocks ( )

	rctlblk_get_global_action — manipulate resource control blocks ( )

	rctlblk_get_global_flags — manipulate resource control blocks ( )

	rctlblk_get_local_action — manipulate resource control blocks ( )

	rctlblk_get_local_flags — manipulate resource control blocks ( )

	rctlblk_get_privilege — manipulate resource control blocks ( )

	rctlblk_get_recipient_pid — manipulate resource control blocks ( )

	rctlblk_get_value — manipulate resource control blocks ( )

	rctlblk_set_local_action — manipulate resource control blocks ( )

	rctlblk_set_local_flags — manipulate resource control blocks ( )

	rctlblk_set_privilege — manipulate resource control blocks ( )

	rctlblk_set_value — manipulate resource control blocks ( )

	rctlblk_size — manipulate resource control blocks ( )

	re_comp — compile and execute regular expressions ( )

	re_exec — compile and execute regular expressions ( )

	read a string of characters without echo — getpass ( )

	read a directory entry — readdir ( )

	read a string of characters without echo, — getpassphrase ( )

	read directory
		— readdir ( )
		— readdir_r ( )

	readdir — read a directory entry ( )

	readdir — read directory ( )
		POSIX ( )

	readdir_r — read directory ( )

	realloc — memory allocator ( )

	realpath — resolve pathname ( )

	reboot — reboot system or halt processor ( )

	regcmp — compile regular expression ( )

	regcomp — regular expression matching ( )

	regerror — regular expression matching ( )

	regex — execute regular expression ( )

	regexec — regular expression matching ( )

	regfree — regular expression matching ( )

	register a function to run at process termination or object unloading— atexit ( )

	register fork handlers — pthread_atfork ( )

	regular expression matching
		— regcomp ( )
		— regerror ( )
		— regexec ( )
		— regfree ( )

	regular expressions, compile and execute — regcmp, regex ( )

	remove — remove file ( )

	remque — remove elment from a queue ( )

	reposition a file-position indicator in a stream
		— fseek ( )
		— fseeko ( )

	reset file position indicator in a stream — rewind ( )

	reset position of directory stream to the beginning of a directory — rewinddir ( )

	resetmnttab — get mnttab file information ( )

	resolve pathname — realpath ( )

	resource utilization, get information — getrusage ( )

	retrieve stack boundaries — stack_getbounds ( )

	return a file offset for a file descriptor — tell ( )

	return a file offset in a stream
		— ftell ( )
		— ftello ( )

	return pathname of executable — getexecname ( )

	rewind — reset file position indicator in a stream ( )

	rewinddir — reset position of directory stream to the beginning of a directory ( )

	rindex — string operations ( )


S

	scan a directory
		— alphasort ( )
		— scandir ( )

	scandir — scan a directory ( )

	scanf — convert formatted input ( )
		Conversion Characters ( )
		Conversion Specifications ( )

	scheduling priority, change priority of a process — nice ( )

	search functions
		binary search a sorted table — bsearch ( )
		linear search and update routine — lsearch, lfind ( )
		manage hash search tables — hsearch ( )

	seconvert — convert number to ASCII ( )

	seekdir — set position of directory stream ( )

	select — synchronous I/O multiplexing ( )

	send a ``break'' for a specific duration — tcsendbreak ( )

	set and/or get alternate signal stack context — sigstack ( )

	set and/or get signal stack context — sigstack ( )

	set encoding key — setkey ( )

	set foreground process group ID — tcsetpgrp ( )

	set input baud rate, — cfsetispeed ( )

	set output baud rate, — cfsetospeed ( )

	set position of directory stream — seekdir ( )

	set stream orientation — fwide ( )

	set the parameters associated with the terminal — tcsetattr ( )

	set wide-characters in memory — wmemset ( )

	setcat — define default catalog ( )

	setgrent — group database entry functions ( )

	sethostname — set name of current host ( )

	setjmp — non-local goto ( ) ( )

	_setjmp — non-local goto ( ) ( )

	setkey — set encoding key ( )

	setlabel — define the label for pfmt() and lfmt(). ( )

	setlocale — modify and query a program's locale ( )

	setlogmask — control system log ( )

	setpriority — get or set process scheduling priority ( )

	setpwnam — get password entry from user database ( )

	setspent — get shadow password database entry ( )

	setstate — pseudorandom number functions ( )

	settimeofday — set date and time ( )

	settimeofday — set system's notion of current Greenwich time ( )

	setusershell() — function ( )

	setutent — user accounting database functions ( )

	setutxent — user accounting database functions ( )

	severity levels, applications, build a list for use with fmtmsg — addseverity ( )

	sfconvert — convert number to ASCII ( )

	sgconvert — convert number to ASCII ( )

	shared object
		close — dlclose ( )
		get address of symbol — dlsym ( )
		get diagnostic information — dlerror ( )
		open — dlopen ( )

	shell command, issue one — system ( )

	sig2str — translation between signal name and signal number ( )

	sigaddset — manipulate sets of signals ( )

	sigdelset — manipulate sets of signals ( )

	sigemptyset — manipulate sets of signals ( )

	sigfillset — manipulate sets of signals ( )

	sigfpe() function ( )

	sighold — adds sig to the calling process's signal mask ( )

	sigignore — sets the disposition of sig to SIG_IGN ( )

	siginterrupt — allow signals to interrupt functions ( )

	sigismember —manipulate sets of signals ( )

	siglongjmp — non-local goto ( )

	signal — modify signal disposition ( )

	signal — simplified software signal facilities ( )

	signal
		schedule after interval in microseconds — ualarm ( )
		suspend execution for interval in microseconds — usleep ( )

	simplified signal facilities — bsd_signal ( )

	signal management, simplified, for application processes — signal ( )

	signal messages, system
		— psignal ( ) ( )

	signals, block
		— sigblock ( )
		— sigmask ( )
		— sigpause ( )
		— sigsetmask ( )

	signals, software
		— gsignal ( )
		— ssignal ( )

	sigpause — removes sig from the calling process's signal mask and suspends the calling process until a signal is received ( )

	sigrelse — removes sig from the calling process's signal mask ( )

	sigset — modify signal disposition ( )

	sigsetjmp — non-local goto ( )

	sigsetops — manipulate sets of signals ( )

	sigstack — set and/or get alternate signal stack context ( )

	sigstack — set and/or get signal stack context ( )

	sigvec — software signal facilities ( )

	single-byte to wide-character conversion — btowc ( )

	single_to_decimal — decimal record from single-precision floating ( )

	sleep — suspend execution for interval ( )

	sleep, suspend execution for interval in microseconds — usleep ( )

	snprintf — print formatted output ( )

	software signals
		— gsignal ( )
		— ssignal ( )

	sort, quick — qsort ( )

	sprintf — formatted output conversion ( )

	sprintf — print formatted output ( )

	srand — reset simple random number generator ( )

	srandom — pseudorandom number functions ( )

	sscanf — convert formatted input ( )

	stack_getbounds — retrieve stack boundaries ( )

	_stack_grow — express an intention to extend the stack ( )

	stack_inbounds — determine if address is within stack boundaries ( )

	stack_setbounds — update stack boundaries ( )

	stack_violation — determine stack boundary violation event ( )

	stdio — standard buffered input/output package ( )

	sting collation, — strcoll ( )

	store — data base subroutines ( )

	str2sig — translation between signal name and signal number ( )

	strcasecmp — string operations ( )

	strcat — string operations ( )

	strchr — string operations ( )

	strcmp — string operations ( )

	strcpy — string operations ( )

	strcspn — string operations ( )

	strdup — string operations ( )

	stream
		convert a string of Process Code characters to EUC characters and put it on a stream — putws ( )
		open — fopen ( )

	stream, assign buffering
		— setbuf ( )
		— setvbuf ( )

	stream, get string
		— fgets ( )
		— gets ( )

	stream, put a string
		— fputs ( )
		— puts ( )

	stream status inquiries
		— clearerr ( )
		— feof ( )
		— ferror ( )
		— fileno ( )

	STREAMS
		attach a STREAMS-based file descriptor to an object in the file system name space — fattach ( )
		test file descriptor for a STREAMS file — isastream ( )

	strfmon — convert monetary value to string ( )

	strftime — convert date and time to string ( )

	string — string operations ( )

	string operations — strcasecmp ( )

	string operations — strcat ( )

	string operations — strchr ( )

	string operations — strcmp ( )

	string operations — strcpy ( )

	string operations — strcspn ( )

	string operations — strdup ( )

	string operations — string ( )

	string operations — strlcat ( )

	string operations — strlcpy ( )

	string operations — strlen ( )

	string operations — strncasecmp ( )

	string operations — strncat ( )

	string operations — strncmp ( )

	string operations — strncpy ( )

	string operations — strpbrk ( )

	string operations — strrchr ( )

	string operations — strspn ( )

	string operations — strstr ( )

	string operations — strtok ( )

	string operations — strtok_r ( )

	string conversion routines
		— atoi ( )
		— atol ( )
		— atoll ( )
		— lltostr ( )
		— strtol ( )
		— strtoll ( )
		— ulltostr ( )

	string encoding function — crypt ( )

	string operation, get error message string — strerror ( )

	string operations
		bit and byte — bstring ( )
		— index ( )
		— rindex ( )

	string_to_decimal — decimal record from character string ( )

	string transformation — strxfrm ( )

	strings, convert from numbers — econvert ( )

	strlcat — string operations ( )

	strlcpy — string operations ( )

	strlen — string operations ( )

	strncasecmp — string operations ( )

	strncat — string operations ( )

	strncmp — string operations ( )

	strncpy — string operations ( )

	strpbrk — string operations ( )

	strptime — date and time conversion ( )

	strrchr — string operations ( )

	strsignal — get name of signal ( )

	strspn — string operations ( )

	strstr — string operations ( )

	strtod — convert string to double-precision number ( )

	strtok — string operations ( )

	strtok_r — string operations ( )

	strtol — string conversion routines ( )

	strtoll — string conversion routines ( )

	strtoul — convert string to unsigned long ( )

	strtows — code conversion for Process Code and File Code ( )

	strxfrm — string transformation ( )

	suspend or restart the transmission or reception of data — tcflow ( )

	swab — swap bytes ( )

	swap bytes — swab ( )

	swapcontext — manipulate user contexts ( )

	swprintf — print formatted wide-character output ( )

	swscanf — convert formatted wide-character input ( )

	symbol address, get address in shared object or executable — dlsym ( )

	symbol table, get entries — nlist ( )

	sync_instruction_memory — make modified instructions executable ( )

	synchronize changes to a file — fsync ( )

	synchronous I/O multiplexing
		— FD_CLR ( )
		— FD_ISSET ( )
		— FD_SET ( )
		— select ( ) ( )

	sys_siglist — system signal messages list ( )

	syscall — indirect system call ( )

	sysconf — get configurable system variables ( )

	syslog — control system log ( )

	system — issue shell command ( )

	system error messages, print — perror ( )

	system signal messages, — psignal ( )

	system variables, get configurable ones — sysconf ( )


T

	tcdrain — wait for transmission of output ( )

	tcflow — suspend or restart the transmission or reception of data ( )

	tcflush — flush non-transmitted output data, non-read input data or both ( )

	tcgetattr — get the parameters associated with the terminal ( )

	tcgetpgrp — get foreground process group ID ( )

	tcgetsid — get process group ID for session leader for controlling terminal ( )

	tcsendbreak — send a ``break'' for a specific duration ( )

	tcsetattr — set the parameters associated with the terminal ( )

	tcsetpgrp — set foreground process group ID ( )

	tdelete — manage binary search trees ( )

	tell — return a file offset for a file descriptor ( )

	telldir — current location of a named directory stream ( )

	tempnam — create a name for a temporary file ( )

	terminal, find the slot of the current user in the user accounting database — ttyslot ( )

	terminal device, slave pseudo
		get name — ptsname ( )
		grant access — grantpt ( )

	terminal ID, generate path name for controlling terminal — ctermid, ctermid_r ( )

	termios — general terminal interface ( )

	test character for specified class — iswctype ( )

	test for a terminal device — isatty ( )

	text processing utilities
		compile and execute regular expressions — regcmp, regex ( )
		quick sort — qsort ( )

	text string, — gettxt ( )

	textdomain — message handling functions ( )

	tfind — manage binary search trees ( )

	time, computes the difference between two calendar times — difftime ( )

	time, calendar, convert from a tm structure — mktime ( )

	time accounting, for current process — times ( )

	time and date
		convert to string — asctime ( )
		convert to string — ctime ( )
		convert to string — gmtime ( )
		convert to string — localtime ( )
		convert to string — tzset ( )
		convert user format date and time — getdate ( )
		get — ftime ( )
		— settimeofday ( ) ( )

	time of day, get and set — gettimeofday, settimeofday ( )

	times — get process times ( )

	tmpfile — create a temporary file ( )

	tmpnam — create a name for a temporary file ( )

	toascii — translate integer to a 7-bit ASCII character ( )

	tolower — transliterate upper-case characters to lower-case ( )

	_tolower — transliterate upper-case characters to lower-case ( )

	toupper — transliterate lower-case characters to upper-case ( )

	_toupper — transliterate lower-case characters to upper-case ( )

	towctrans — wide-character mapping ( )

	towlower — transliterate upper-case wide-character code to lower-case ( )

	towupper — transliterate lower-case wide-character code to upper-case ( )

	translate address to symbolic information — dladdr1 ( )

	translate address to symbolic information — dladdr ( )

	translate integer to a 7-bit ASCII character — toascii ( )

	translation between signal name and signal number — str2sig ( )
		sig2str ( )

	transliterate lower-case characters to upper-case — toupper ( )

	transliterate lower-case characters to upper-case — _toupper ( )

	transliterate lower-case wide-character code to upper-case — towupper ( )

	transliterate upper-case characters to lower-case — tolower ( )

	transliterate upper-case characters to lower-case — _tolower ( )

	transliterate upper-case wide-character code to lower-case — towlower ( )

	truncate — set a file to a specified length ( )

	tsearch — manage binary search trees ( )

	ttyname — find pathname of a terminal ( )
		POSIX ( )

	ttyname_r — find pathname of a terminal ( )

	ttyslot — find the slot of the current user in the user accounting database ( )

	twalk — manage binary search trees ( )


U

	ualarm — schedule signal after interval in microseconds ( )

	ulltostr — string conversion routines ( )

	umem_alloc — fast, scalable memory allocation ( )

	umem_cache_alloc — allocation cache manipulation ( )

	umem_cache_create — allocation cache manipulation ( )

	umem_cache_destroy — allocation cache manipulation ( )

	umem_cache_free — allocation cache manipulation ( )

	umem_debug — debugging features of the umem library ( )

	umem_free — fast, scalable memory allocation ( )

	umem_nofail_callback — fast, scalable memory allocation ( )

	umem_zalloc — fast, scalable memory allocation ( )

	ungetc — push byte back into input stream ( )

	ungetwc — push wide-character code back into input stream ( )

	unlock a pseudo-terminal master/slave pair — unlockpt ( )

	unlock address space, — munlockall ( )

	unlock memory pages, — munlock ( )

	unlockpt — unlock a pseudo-terminal master/slave pair ( )

	update stack boundaries — stack_setbounds ( )

	updwtmp — user accounting database functions ( )

	updwtmpx — user accounting database functions ( )

	user accounting database functions — endutent ( )

	user accounting database functions — endutxent ( )

	user accounting database functions — getutent ( )

	user accounting database functions — getutid ( )

	user accounting database functions — getutline ( )

	user accounting database functions — getutmp ( )

	user accounting database functions — getutmpx ( )

	user accounting database functions — getutxent ( )

	user accounting database functions — getutxid ( )

	user accounting database functions — getutxline ( )

	user accounting database functions — pututline ( )

	user accounting database functions — pututxline ( )

	user accounting database functions — setutent ( )

	user accounting database functions — setutxent ( )

	user accounting database functions — updwtmp ( )

	user accounting database functions — updwtmpx ( )

	user accounting database functions — utmpname ( )

	user accounting database functions — utmpxname ( )

	user context
		— makecontext ( )
		— swapcontext ( )

	user IDs, get character-string representation — cuserid ( )

	usleep — suspend execution for interval in microseconds ( )

	utmpname — user accounting database functions ( )

	utmpx file, find the slot of current user — ttyslot ( )

	utmpxname — user accounting database functions ( )


V

	vfprintf — formatted output conversion ( )

	vfscanf — convert formatted input ( )

	vfstab file, — getvfsent ( )

	vfwprintf — wide-character formatted output of a stdarg argument list ( )

	vfwscanf — convert formatted wide-character input ( )

	virtual memory, optimizing usage of user mapped memory — madvise ( )

	visit registered rctls on current system — rctl_walk ( )

	vlfmt — display error message in standard format and pass to logging and monitoring services ( )

	vpfmt — display error message in standard format and pass to logging and monitoring services ( )

	vprintf — formatted output conversion ( )

	vscanf — convert formatted input ( )

	vsprintf — formatted output conversion ( )

	vsscanf — convert formatted input ( )

	vswprintf — wide-character formatted output of a stdarg argument list ( )

	vswscanf — convert formatted wide-character input ( )

	vsyslog — log message with a stdarg argument list ( )

	vwprintf — wide-character formatted output of a stdarg argument list ( )

	vwscanf — convert formatted wide-character input ( )


W

	wait — wait for process to terminate or stop ( )

	waitpid — wait for process to terminate or stop ( )

	wait3 — wait for process to terminate or stop ( ) ( )

	wait4 — wait for process to terminate or stop ( ) ( )

	wait for process to terminate or stop
		— wait3 ( )
		— wait4 ( )

	wait for transmission of output — tcdrain ( )

	walk stack pointed to by ucontext — printstack ( )

	walk stack pointed to by ucontext — walkcontext ( )

	walkcontext — walk stack pointed to by ucontext ( )

	watof — convert wide character string to double-precision number ( )

	watoi — convert wide character string to long integer ( )

	watol — convert wide character string to long integer ( )

	watoll — convert wide character string to long integer ( )

	wchar_t string, number conversion — wscanf ( )

	wcrtomb — convert a wide-character code to a character (restartable) ( )

	wcscat — wide-character string operations ( )

	wcschr — wide-character string operations ( )

	wcscmp — wide-character string operations ( )

	wcscoll — wide character string comparison using collating information ( )

	wcscpy — wide-character string operations ( )

	wcscspn — wide-character string operations ( )

	wcsetno — get information on EUC codesets ( )

	wcsftime — convert date and time to wide character string ( )

	wcslen — wide-character string operations ( )

	wcsncat — wide-character string operations ( )

	wcsncmp — wide-character string operations ( )

	wcsncpy — wide-character string operations ( )

	wcspbrk — wide-character string operations ( )

	wcsrchr — wide-character string operations ( )

	wcsrtombs — convert a wide-character string to a character string (restartable) ( )

	wcsspn — wide-character string operations ( )

	wcsstr — find a wide-character substring ( )

	wcstod — convert wide character string to double-precision number ( )

	wcstok — wide-character string operations ( )

	wcstol — convert wide character string to long integer ( )

	wcstombs — convert a wide-character string to a character string ( )

	wcstoul — convert wide character string to unsigned long ( )

	wcstring — wide-character string operations ( )

	wcswcs — wide-character string operations ( )

	wcswidth — number of column positions of a wide-character string ( )

	wcsxfrm — wide character string transformation ( )

	wctob — wide-character to single-byte conversion ( )

	wctomb — convert a wide-character code to a character ( )

	wctrans — define character mapping ( )

	wctype — define character class ( )

	wcwidth — number of column positions of a wide-character code ( )

	wide character string to long integer, convert
		— watoi ( )
		— watol ( )
		— watoll ( )
		— wcstol ( )
		— wstol ( )

	wide-character code classification functions
		— isenglish ( )
		— isideogram ( )
		— isnumber ( )
		— isphonogram ( )
		— isspecial ( )
		— iswalnum ( )
		— iswalpha ( )
		— iswascii ( )
		— iswcntrl ( )
		— iswdigit ( )
		— iswgraph ( )
		— iswlower ( )
		— iswprint ( )
		— iswpunct ( )
		— iswspace ( )
		— iswupper ( )
		— iswxdigit ( )

	wide-character formatted output of a stdarg argument list
		— vfwprintf ( )
		— vswprintf ( )
		— vwprintf ( )

	wide-character mapping — towctrans ( )

	wide character string comparison using collating information
		— wcscoll ( )
		— wscoll ( )

	wide-character string operations
		— wcscat ( )
		— wcschr ( )
		— wcscmp ( )
		— wcscpy ( )
		— wcscspn ( )
		— wcslen ( )
		— wcsncat ( )
		— wcsncmp ( )
		— wcsncpy ( )
		— wcspbrk ( )
		— wcsrchr ( )
		— wcsspn ( )
		— wcstok ( )
		— wcstring ( )
		— wcswcs ( )
		— windex ( )
		— wrindex ( )

	wide character string transformation
		— wcsxfrm ( )
		— wsxfrm ( )

	wide-character to single-byte conversion — wctob ( )

	windex — wide-character string operations ( )

	wmemchr — find a wide-character in memory ( )

	wmemcmp — compare wide-characters in memory ( )

	wmemcpy — copy wide-characters in memory ( )

	wmemmove — copy wide-characters in memory with overlapping areas ( )

	wmemset — set wide-characters in memory ( )

	wordexp — perform word expansions ( )

	wordfree — perform word expansions ( )

	working directory, get pathname — getwd ( )

	wprintf — print formatted wide-character output ( )

	wrindex — wide-character string operations ( )

	wscanf — convert formatted wide-character input ( )

	wscasecmp — Process Code string operations ( )

	wscol — Process Code string operations ( )

	wscoll — wide character string comparison using collating information ( )

	wsdup — Process Code string operations ( )

	wsncasecmp — Process Code string operations ( )

	wsprintf — formatted output conversion ( )

	wsscanf — formatted input conversion ( )

	wstod — convert wide character string to double-precision number ( )

	wstol — convert wide character string to long integer ( )

	wstostr — code conversion for Process Code and File Code ( )

	wsxfrm — wide character string transformation ( )