Linux Shell Scripting Cookbook - Third Edition

How to do it...

These are the operations you can perform on aliases:

1. Create an alias:

        $ alias new_command='command sequence'

This example creates a shortcut for the apt-get install command:

        $ alias install='sudo apt-get install'

Once the alias is defined, we can type install instead of sudo apt-get install.

2. The alias command is temporary: aliases exist until we close the current terminal. To make an alias available to all shells, add this statement to the ~/.bashrc file. Commands in ~/.bashrc are always executed when a new interactive shell process is spawned:

        $ echo 'alias cmd="command seq"' >> ~/.bashrc

3. To remove an alias, remove its entry from ~/.bashrc (if any) or use the unalias command. Alternatively, alias example= should ...