Similar to Kill

Echo (command)

Exit (command)

Mkdir

More (command)

Rmdir

Tee (command)

Ar (Unix)

At (command)

AWK

Bc (programming language)

Cal (command)

Cat (Unix)

Cd (command)

Chgrp

Chmod

Chown

Cksum

Cmp (Unix)

Cp (Unix)

Cron

Ctags

Cut (Unix)

Dd (Unix)

Diff

Dirname

Du (Unix)

Ed (software)