Other alias notes:

Quotes are not necessary when you are creating aliases, but they do make your intended meaning more clear.

To remove an alias while you are logged in, just type unalias.

Aliases that you create will take precedence over original Unix commands in your path. For instance, if you create an alias named 'ls', it will be executed instead of the Unix 'ls' command. So, if you create an alias such as:

alias ls "echo no files found"

you could really cause quite a bit of confusion the next time you type "ls" at the command line.