GitLab

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Changing from `zcat` to `zgrep` because some `zcat` implementations do not work
if the file is not compressed.

Removing one "apt-get autoremove" alias because it is duplicated.

I use that command a lot of times, and there's no shortcut for that.
Now it does :)

Since #3902 lacks the auto-completion I made a PR for this as well.

Also fixes some typos.

* Easy to remember aliases
* Simplified
* Added aar() function for `sudo apt-add-repository xxxx && apt-get upgrade && apt-get install xxxx`