Install Drupal modules with Linux commands

How to download and extract a drupal module on Linux

wget http://ftp.drupal.org/files/projects/phpmailer-6.x-2.1.tar.gz
gunzip phpmailer-6.x-2.1.tar.gz
tar -xvf phpmailer-6.x-2.1.tar
rm phpmailer-6.x-2.1.tar
Knowledge keywords: 
module
install
Drupal 6.x
command
Linux