How to uninstall or remove powermgmt-base software package from Ubuntu 14.04 LTS (Trusty Tahr)

You can uninstall or removes an installed powermgmt-base package itself from Ubuntu 14.04 LTS (Trusty Tahr) through the terminal,

$ sudo apt-get remove powermgmt-base

Uninstall powermgmt-base including dependent package

If you would like to remove powermgmt-base and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove powermgmt-base

Use Purging powermgmt-base

If you use with purge options to powermgmt-base package all the configuration and dependent packages will be removed.

$ sudo apt-get purge powermgmt-base

If you use purge options along with auto remove, will be removed everything regarding the package, It's really useful when you want to reinstall again.

$ sudo apt-get purge --auto-remove powermgmt-base