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The alias command is very useful. It is kind of a shortcut in some ways. I get tired of tying ls -la so I can see all the info for my files so what i do is type alias ls 'ls -la'. What this command does is that it sets up an alias so that every time I type ls the computer treats is as though I typed ls -la. There are many other things you can do also. Say you have a long command you run a lot. You can alias it to something like mc.

Ex: alias mc 'locate log_error | grep -R 192.168.1.1 *'

Your command can be as long or as short that you want to alias. I also use it to setup ssh connections.

Ex: alias con1 'ssh usrname@192.168.1.1'

Now any time I type con1 it will try to make an ssh connection to that ip address.

Posted in Lessons, Mac, Unix |