How to uninstall or remove ruby-em-spec software package from Ubuntu 14.04 LTS (Trusty Tahr)

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

$ sudo apt-get remove ruby-em-spec

Uninstall ruby-em-spec including dependent package

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

$ sudo apt-get remove --auto-remove ruby-em-spec

Use Purging ruby-em-spec

If you use with purge options to ruby-em-spec package all the configuration and dependent packages will be removed.

$ sudo apt-get purge ruby-em-spec

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 ruby-em-spec