Bash Commands: Useful commands for filesystem, text processing etc

File system
- cat
- chattr
- cd
- chmod
- chown
- chgrp
- cksum
- cmp
- cp
- du
- df
- file
- fsck
- fuser
- ln
- ls
- lsattr
- lsof
- mkdir
- mount
- mv
- pwd
- rm
- rmdir
- split
- touch

Processes
- at
- chroot
- cron
- exit
- kill
- killall
- nice
- pgrep
- pidof
- pkill
- ps
- pstree
- sleep
- time
- top
- wait
- watch

User environment
- env
- finger
- id
- logname
- mesg
- passwd
- su
- sudo
- uname
- uptime
- w
- wall
- who
- whoami
- write

Text processing
- awk
- comm
- cut
- ed
- ex
- fmt
- head
- iconv
- join
- less
- more
- paste
- sed
- sort
- tac
- tail
- tr
- uniq
- wc
- xargs

Shell programming
- alias
- basename
- echo
- expr
- false
- printf
- test
- true
- unset

Networking
- inetd
- netstat
- ping
- rlogin
- nc
- traceroute

Searching
- find
- grep
- strings

Miscellaneous
- banner
- bc
- cal
- clear
- date
- dd
- lp
- man
- size
- tee
- yes