- ulimit
-
set or report file size limit
- umask
-
get or set the file mode creation mask
- unalias
-
remove alias definitions
- uname
-
return system name
- uncompress
-
expand compressed data
- unexpand
-
convert spaces to tabs
- unget
-
undo a previous get of an SCCS file (DEVELOPMENT)
- uniq
-
report or filter out repeated lines in a file
- unlink
-
call the unlink function
- unset
-
unset values and attributes of variables and functions
- uucp
-
system-to-system copy
- uudecode
-
decode a binary file
- uuencode
-
encode a binary file
- uustat
-
uucp status inquiry and job control
- uux
-
remote command execution
- val
-
validate SCCS files (DEVELOPMENT)
- vi
-
screen-oriented (visual) display editor
- wait
-
await process completion
- wc
-
word, line, and byte or character count
- what
-
identify SCCS files (DEVELOPMENT)
- who
-
display who is on the system
- write
-
write to another user
- xargs
-
construct argument lists and invoke utility
- yacc
-
yet another compiler compiler (DEVELOPMENT)
- zcat
-
expand and concatenate data