man pages section 1: User Commands
    
D
 
 date -- display date and/or set date ( Index Term Link )
 
 date
  prompts for a date -- ckdate ( Index Term Link )
  provides error message for date -- errdate ( Index Term Link )
  provides help message for date -- helpdate ( Index Term Link )
  validates a date -- valdate ( Index Term Link )
 
 deallocate -- deallocate devices ( Index Term Link )
 
 debug tools, debugger -- adb ( Index Term Link )
 
 decode binary file -- uudecode ( Index Term Link )
 
 decode files, -- crypt ( Index Term Link )
 
 decrypt -- crypt ( Index Term Link )
 
 define locale environment -- localedef ( Index Term Link )
 
 dependencies, dynamic, of executable files or shared objects -- ldd ( Index Term Link )
 
 deroff -- remove nroff, troff, tbl and eqn constructs ( Index Term Link )
 
 describe command -- whatis ( Index Term Link )
 
 describe instruction set architectures -- isainfo ( Index Term Link )
 
 desk calculator, -- dc ( Index Term Link )
 
 determine which variant instruction set is optimal to use -- optisa ( Index Term Link )
 
 devices
  allocation -- allocate ( Index Term Link )
  deallocation -- deallocate ( Index Term Link )
  eject media device from drive -- eject ( Index Term Link )
  list_devices -- list_devices ( Index Term Link )
 
 df -- display status of disk space on file systems ( Index Term Link )
 
 dhcpinfo -- display value of parameters received through DHCP ( Index Term Link )
 
 dictionary, system, find words -- look ( Index Term Link )
 
 diff -- compare two files ( Index Term Link )
 
 diff
  3-way -- diff3 ( Index Term Link )
  big -- bdiff ( Index Term Link )
 
 diff3 -- display line-by-line differences between three text files ( Index Term Link )
 
 diff command, side-by-side -- sdiff ( Index Term Link )
 
 diffmk -- mark differences between versions of a troff input file ( Index Term Link )
 
 digestp -- frontends to the mp Text to PDL (Printer Description Language) pretty print filter ( Index Term Link )
 
 dircmp -- compares contents of directories ( Index Term Link )
 
 directories
  compare contents -- dircmp ( Index Term Link )
  list contents -- ls ( Index Term Link )
  list contents of -- ls ( Index Term Link )
  make -- mkdir ( Index Term Link )
  make link to -- ln ( Index Term Link )
  print working directory name -- pwd ( Index Term Link )
  remove -- rmdir ( Index Term Link )
 
 dirname -- delivers all but last level of path name ( Index Term Link )
 
 dirs -- shell built-in functions to change the current working directory ( Index Term Link )
 
 dis -- object code disassembler ( Index Term Link )
 
 disable -- disable LP printers ( Index Term Link )
 
 disassembler, object code -- dis ( Index Term Link )
 
 disk usage, summary -- du ( Index Term Link )
 
 display editor -- vi ( Index Term Link )
 
 display
  a list of all valid user names -- dispuid ( Index Term Link )
  architecture of current host -- arch ( Index Term Link )
  call-graph profile data -- gprof ( Index Term Link )
  contents of directory -- ls ( Index Term Link )
  current news -- news ( Index Term Link )
  -- date ( Index Term Link )
  disk usage -- du ( Index Term Link )
  dynamic dependencies of executable files or shared objects -- ldd ( Index Term Link )
  effective user name -- whoami ( Index Term Link )
  file names -- ls ( Index Term Link )
  first few lines of files -- head ( Index Term Link )
  group membership of user -- groups ( Index Term Link ) ( Index Term Link )
  how long the system has been up -- uptime ( Index Term Link )
  identifier of current host -- hostid ( Index Term Link )
  last commands executed, in reverse order -- lastcomm ( Index Term Link )
  list of all valid group names -- dispgid ( Index Term Link )
  login and logout information about users and terminals -- last ( Index Term Link )
  name of current host -- hostname ( Index Term Link )
  name of the user running the process -- logname ( Index Term Link )
  printer queue -- lpq ( Index Term Link )
  process status -- ps ( Index Term Link )
  processor type of current host -- mach ( Index Term Link )
  selected lines from file -- sed ( Index Term Link )
  size or sizes of a page of memory -- pagesize ( Index Term Link )
  status of disk space on file system -- df ( Index Term Link )
  status of local hosts -- ruptime ( Index Term Link )
  status of network hosts -- rup ( Index Term Link )
  users on system -- users ( Index Term Link )
  working directory name -- pwd ( Index Term Link )
 
 display discretionary file information -- getfacl ( Index Term Link )
 
 display information about currently logged-in users -- w ( Index Term Link )
 
 display information about the address space of a process -- pmap ( Index Term Link )
 
 display names and references bound in FNS context -- fnlist ( Index Term Link )
 
 display package parameter values -- pkgparam ( Index Term Link )
 
 display profile data -- prof ( Index Term Link )
 
 display reference bound to FNS name -- fnlookup ( Index Term Link )
 
 display the internal versioning information of dynamic objects -- pvs ( Index Term Link )
 
 display the native instruction sets executable on this platform -- isalist ( Index Term Link )
 
 display value of parameters received through DHCP -- dhcpinfo ( Index Term Link )
 
 document production
  check spelling -- spell ( Index Term Link )
  check nroff/troff files -- checknr ( Index Term Link )
  create an inverted index to a bibliographic database -- indexbib ( Index Term Link )
  create or extend bibliography -- addbib ( Index Term Link )
  eliminate .so's from nroff input -- soelim ( Index Term Link )
  expand and insert references from a bibliographic database -- refer ( Index Term Link )
  filters reverse line-feeds from two-column nroff text -- col ( Index Term Link )
  find references in a bibliographic database -- lookbib ( Index Term Link )
  format and print a bibliographic database -- roffbib ( Index Term Link )
  format documents for display or line-printer -- nroff ( Index Term Link )
  format tables for nroff or troff -- tbl ( Index Term Link )
  mark differences between versions of a troff input file -- diffmk ( Index Term Link )
  remove nroff, troff, tbl and eqn constructs -- deroff ( Index Term Link )
  simple text formatters -- fmt ( Index Term Link )
  sort a bibliographic database -- sortbib ( Index Term Link )
  troff postprocessor for PostScript printers -- dpost ( Index Term Link )
  typeset mathematics -- eqn ( Index Term Link )
  typeset or format documents -- troff ( Index Term Link )
 
 DOS
  convert text file from DOS format to ISO format -- dos2unix ( Index Term Link )
  convert text file from ISO format to DOS format -- unix2dos ( Index Term Link )
 
 dos2unix -- convert text file from DOS format to ISO format ( Index Term Link )
 
 download -- host resident PostScript font downloader ( Index Term Link )
 
 download -- prepends host resident PostScript fonts to files ( Index Term Link )
 
 dpost -- troff postprocessor for PostScript printers ( Index Term Link )
 
 draw graph -- graph ( Index Term Link )
 
 du -- summarize disk usage ( Index Term Link )
 
 du -- display disk usage per directory or file ( Index Term Link )
 
 dump -- dump selected parts of an object file ( Index Term Link )
 
 dump selected parts of an object file -- dump ( Index Term Link )
 
 dump selected parts of an object file -- elfdump ( Index Term Link )
 
 dumpcs -- show codeset table for the current locale ( Index Term Link )
 
 dumpkeys -- dump keyboard translation tables ( Index Term Link )