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Turning on autocompletion for the bash shell in terminal sessions

Published on 26th June 2013 Estimated Reading Time: 1 minute

At some point, I managed to lose the ability to have tab-key-based autocompletion on terminal sessions on my Ubuntu GNOME machine. Wanting it caused had me to turn to the web for an answer, and I found it on a Linux Mint forum; the bash shell is so pervasive in the UNIX and Linux worlds that you can look anywhere for a fix like this.

The problem centred around the .bashrc file in my home area. It does have quite a few handy custom aliases, and I must have done a foolish spring-clean on the file sometime. That is the only way that I can explain how the following lines got removed:

if [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
fi

What they do is look to see if /etc/bash_completion can be found on your system and to use it for tab-based autocompletion. With the lines not in .bashrc, it couldn't happen. Others may replace bash_completion with bash.bashrc to get a fuller complement of features, but I'll stick with what I have for now.

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