Linux is an operating system that is in the constant process of updates and patches. Manually updating all machines can be a daunting task for a system administrator. Thankfully the user or administrator need not manually check for and download updates. Linux has a provision of automatically updating selective or all packages using what are called package managers. The package managers have a database of the software installed, their version, the internet address from where an update can be obtained, etc. rpm-based Linux flavours generally use the yum package manger while the Debian-based ones use aptget. These are basically command-line means of updating-it involves issuing a single command and configuring the config file if need be. There are GUI front ends to achieve the same. But we will just stick to the basic command line way to getting the update task done. The GUI is something you can figure out by yourself, so as usual we ll leave if for you to explore and have fun.
