Aliases

If you use the same command often, you might get tired of typing it. bash lets you write shorter aliases for your commands.

Say you always use the -almost-all and -color=auto options to ls. You quickly get tired of typing ls -almost-all -color=auto. So you make an alias:

alias myls='ls -almost-all -color=auto' 

Now you can type myls instead of the full command. To see what myls really is, run the command type myls. To see a list of aliases you've defined, simply type alias on a line by itself.