How to Fix Error: bash: warning: setlocale: LC_CTYPE: cannot change locale (id_ID.UTF-8) in Ubuntu 11.04 / Linux Mint 12

If you get error/warning message similar to this when press Tab for bash command autocompletion :

bash: warning: setlocale: LC_CTYPE: cannot change locale (id_ID.UTF-8)

Solution is:

1. Install the required locale. In my case this is the "id" :

   sudo apt-get install language-pack-id

2. Reconfigure locales:

   sudo dpkg-reconfigure locales
   

Now bash Tab completion should work just fine. :-)

You can learn more about Ubuntu and Linux Mint in Ubuntu Unleashed 2011 Edition: Covering 10.10 and 11.04 (6th Edition) !