- frequently-used
- arp
- awk
- chage
- chmod
- chown
- cksum
- clear
- cp
- crontab
- curl
- cut
- df
- diff
- dig
- dir
- dos2unix
- du
- export
- find
- free
- ftp
- git
- gunzip-gzip
- head
- history
- host
- hostname
- ifconfig
- ip
- jar
- jobs
- jq
- jstack
- keytool
- ln
- lsof
- mkdir
- mount
- nc
- netstat
- nmap
- nohup
- nslookup
- openssl
- passwd
- ping
- ps
- rm
- route
- rsync
- scp
- sed
- sh
- setenforce
- sort
- ssh
- sudo
- sysctl
- system
- tail
- tar
- tee
- telnet
- top
- tr
- traceroute
- tty
- ulimit
- umask
- uname
- uniq
- unzip
- uptime
- vi
- vmstat
- wall
- wc
- wget
- whatis
- whereis
- which
- xargs
- zcat
- zip