How to add remove or view an alias in unix

Aliases of commands are used to make life easier by shortening commands the user uses often, and becomes tedious to type the entire command

Steps
to create an alias
 * for csh,tcsh: alias ls ls -a
 * for ksh: alias -x ls="ls -a"
 * for ksh: alias ls="ls -a"

to view an alias
 * execute: alias Alias_Name

to remove an alias
 * execute: unalias Alias_Name

to make an alias permanent put in your shells startup script i.e. ~/.bashrc ~/.bash_profile ~/.profile

See: Howto configure bash startup scripts

Examples

 * alias mntcd='mount /mnt/cdrom'
 * alias unntcd='umount /mnt/cdrom;eject /mnt/cdrom'
 * alias shut='/sbin/shutdown -hP 1'
 * alias fmplayer='mplayer -fs'

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