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File system
cat cd chmod chown chgrp cksum cmp cp dd du df file fsck fuser ln ls lsattr lsof
mkdir mount mv pax pwd rm rmdir size split tee touch type umask
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Processes
at bg chroot cron fg kill killall nice pgrep pidof pkill ps pstree time top
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User environment
clear env exit finger history id logname mesg passwd su sudo uptime talk tput uname w wall who whoami write
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Text processing
awk banner basename comm csplit cut dirname ed ex fmt fold head iconv join less more paste sed sort spell strings tail tr uniq vi wc xargs
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Shell builtins
alias echo expr printf sleep test true and false unset wait yes
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Networking
dig host ifconfig inetd netcat netstat nslookup ping rdate rlogin route ssh traceroute
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Searching
find grep locate whatis whereis
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Documentation
apropos help man info
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Miscellaneous
bc dc cal date lp lpr
