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| U |
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| | u370 — get processor type truth value (  ) |
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| | u3b — get processor type truth value ( ) |
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| | u3b2 — get processor type truth value ( ) |
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| | u3b5 — get processor type truth value ( ) |
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| | u3b15 — get processor type truth value ( ) |
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| | ucblinks — adds /dev entries to give SunOS 4.x compatible names to SunOS 5.x devices ( ) |
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| | ul — underline text ( ) |
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| | ulimit — set or get limitations on the system resources available to the current shell and its descendents ( ) |
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| | umask — shell built-in function to restrict read/write/execute permissions ( ) |
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| | unalias — shell built-in functions to create your own pseudonym or shorthand for a command or series of commands ( ) |
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| | uname — print name of current system ( ) |
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| | unbind the reference from an FNS name — fnunbind ( ) |
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| | uncompress — uncompress files ( ) |
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| | underline text — ul ( ) |
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| | unexpand — unexpand SPACE characters to TAB characters ( ) |
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| | unhash — shell built-in functions to evaluate the internal hash table of the contents of directories ( ) |
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| | unifdef — resolve and remove ifdef'ed lines from C program source ( ) |
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| | uniq — report or filter out repeated lines in a file ( ) |
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| | units — converts quantities expressed in standard scales to other scales ( ) |
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| | UNIX, convert text file from DOS format to ISO format — dos2unix ( ) |
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| | unix2dos — convert text file from ISO format to DOS format ( ) |
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| | UNIX-to-UNIX commands |
| | | uucp — uucp ( ) |
| | | uulog — uucp ( ) |
| | | uuname — uucp ( ) |
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| | unlimit — set or get limitations on the system resources available to the current shell and its descendents ( ) |
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| | unpack — expand compressed files ( ) |
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| | unset — shell built-in functions to determine the characteristics for environmental variables of the current shell and its descendents ( ) |
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| | unsetenv — shell built-in functions to determine the characteristics for environmental variables of the current shell and its descendents ( ) |
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| | until — shell built-in functions to repetitively execute a set of actions while/until conditions are evaluated TRUE ( ) |
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| | update and examine attributes associated with FNS named object — fnattr ( ) |
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| | update groups of programs — sysV-make ( ) |
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| | update last modified date of file — touch ( ) |
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| | update programs — make ( ) |
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| | uptime — show how long the system has been up ( ) |
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| | user ID, change user IDs of files — chown ( ) |
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| | user IDs |
| | | display a list of all valid user names — dispuid ( ) |
| | | prompts for user ID — ckuid ( ) |
| | | provides error message for user ID — erruid ( ) |
| | | provides help message for user ID — helpuid ( ) |
| | | validates user ID — valuid ( ) |
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| | users |
| | | display effective name — whoami ( ) |
| | | display group membership — groups ( ) |
| | | display information about local and remote users — finger ( ) |
| | | get the name of the user running the process — logname ( ) |
| | | list user login information — listusers ( ) |
| | | talk to another user — talk ( ) |
| | | who is logged in, and what are they doing — w ( ) |
| | | who is logged in on local machines — rwho ( ) |
| | | who is logged in on remote machines — rusers ( ) |
| | | who is on the system — who ( ) |
| | | write to another user — write ( ) |
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| | users, network, Internet user name directory service — whois ( ) |
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| | users — display users on system ( ) |
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| | uucp — UNIX-to-UNIX copy ( ) |
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| | uucp |
| | | log — uulog ( ) |
| | | uucp status inquiry — uustat ( ) |
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| | uudecode — decode binary file ( ) |
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| | uuencode — encode binary file ( ) |
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| | uuglist — print list of service grades available ( ) |
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| | uulog — UUCP log ( ) |
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| | uuname — UUCP list of names ( ) |
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| | uustat — uucp status inquiry ( ) |
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| | uux — system to system command execution ( ) |
