Tip: Enable Bash completion on CentOS 6.2 / SL 6.2

Bash, GNU Bourne-Again SHell, can be made more useful through the use of the bash-completion which provides programmable completion for Bash.

The package is not available the CentOS or Scientific Linux official repositories, so to install it you'll need to setup a third-party repository such as RPMforge or EPEL; in alternative you can always download and install the rpm manually.

$ su
# yum install bash-completion
# source /etc/profile

Examples of usage in which [TAB] means a press of the TAB key:

$ man bas[TAB][TAB]
base base64 basename bash bashbub

$ blk [TAB][TAB]
blkid         blkiomon      blkparse      blkrawverify  blktrace

$ yum re[TAB][TAB]  
reinstall remove repolist resolvedep

$ yum info bas[TAB][TAB]  
basesystem.noarch bash-completion.noarch bash-doc.i686 bash.i686  

Once you enable shell completion you world... err.. your shell world... will change :)