User Commands
apropos
- locate commands by keyword lookup
banner
- make posters
basename
- return non-directory portion of a pathname
bc
- arbitrary-precision arithmetic language
bdiff
- big diff
bfs
- big file scanner
cal
- print calendar
calendar
- reminder service
cat
- concatenate and print files
chgrp
- change owner or group
chmod
- change mode
chown
- change owner or group
cksum
- write file checksums and sizes
cmp
- compare two files
col
- filter reverse line feeds
comm
- select or reject lines common to two sorted files
copy
- (XENIX) copy groups of files
cp
- copy files
cpio
- copy file archives in and out
csplit
- context split
cut
- cut out selected fields of each line of a file
date
- print or set the date
dc
- desk calculator
dd
- convert and copy a file
deroff
- remove nroff/troff, tbl, and eqn constructs
df
- disk free
dfspace
- disk free
diff
- differential file comparator
diff3
- 3-way differential file comparison
dircmp
- directory comparison
dirname
- return the directory portion of a pathname
du
- summarize disk usage
echo
- echo arguments
ed
- text editor
egrep
- search a file for a pattern using full regular
env
- set environment for command invocation
expand
- convert tabs to spaces
expr
- evaluate arguments as an expression
factor
- factor a number
fgrep
- search a file for a character string
file
- determine file type
find
- find files
fmt
- simple text formatter
fmtmsg
- display a message in standard format
fold
- fold long lines
getconf
- get configuration values
getopt
- parse command options
grep
- search a file for a pattern
groups
- show group memberships
hd
- (XENIX) display files in hexadecimal format
head
- display first few lines of files
hostname
- set or print name of current host system
id
- print user and group IDs and names
join
- relational database operator
kill
- terminate a process
lc
- list contents of directory
line
- read one line
listusers
- print a list of user logins
ln
- make a link
logins
- list login information
logname
- get login name
ls
- list contents of directory
mail
- send or receive mail among users
man
- find and display reference manual pages
mesg
- permit or deny messages
mkdir
- make a directory
mkfifo
- make FIFO special file
more
- browse or page through a text file
mt
- magnetic tape utility
mv
- move or rename files and directories
mvdir
- move a directory
nawk
- pattern scanning and processing language
newform
- change the format of a text file
news
- print news items
nice
- run a command at low priority
nl
- line numbering filter
nohup
- run a command immune to hangups
oawk
- pattern scanning and processing language
od
- octal dump
page
- browse or page through a text file
paste
- merge same lines of several files or subsequent lines of
pathchk
- check pathnames
pax
- portable archive interchange
pg
- file perusal filter for CRTs
pgrep
- find or signal processes by name and other
pkill
- find or signal processes by name and other
pr
- print files
printenv
- print out the environment
printf
- print a text string
priocntl
- process scheduler control
ps
- process status
psrinfo
- displays information about processors
ptime
- time a command
pwd
- working directory name
random
- (XENIX) generate a random number
readlink
- displays the target of a symbolic link
renice
- alter priority of running processes
rm
- remove directory entries
rmdir
- remove directories
sdiff
- print file differences side-by-side
sed
- stream editor
seq
- print a sequence of numbers
setpgrp
- set process group ID and session ID
shl
- shell layer manager
sleep
- suspend execution for an interval
sort
- sort or merge files
spell
- find spelling errors
split
- split a file into pieces
stty
- set the options for a terminal
su
- become super-user or another user
sum
- sum and count blocks in a file
tabs
- set terminal tabs
tail
- deliver the last part of a file
tape
- magnetic tape maintenance
tapecntl
- tape control for tape devices
tar
- tape archiver
tcopy
- copy a magnetic tape
tee
- pipe fitting
test
- condition command
time
- time a command
timeout
- execute a command with a time limit
unexpand
- convert spaces to tabs
watch
- Keep an eye on a command output.
whatis
- display a one-line summary about a keyword