how to uninstall package in linux code example

Example 1: sudo apt uninstall

sudo apt-get remove pkg

Example 2: uninstall a package command shell

$ sudo apt purge package-name
OR
$ sudo apt-get purge package-name
OR
$ sudo dpkg -P package-name

Example 3: how to remove package files in linux

tar xvf 1.3.2.tar.gz

Example 4: how to remove package files in linux

sudo nano /etc/postfix/main.cf