When I patch one of my Linux systems or add new software, 99 times out of 100 I use a modern program like the Ubuntu’s Software Center or Linux Mint’s Software Manager. But there are times, especially when I’m working with a system that needs automated updates using cron or with a remote system via ssh or telnet, that I need to use a good, old-fashioned command line tool—and you will too. So, for times like those, it helps to keep the shell commands in mind.
Most Linux distributions have similar tools… but there are key differences.