Install,Uninstall/Remove,Update Package through apt-get in Ubuntu

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What is apt-get
apt-get is a powerful command-line tool used for package management in Debian Linux distribution. It used to work with Ubuntu’s APT (Advanced Packaging Tool) library to Install/manage individual packages , Remove installed package, Upgrade packages etc.
To install package through apt-get package manager
For installing package, just write apt-get install and mention the name of package.

apt-get install package-name

For example- If i need to install phpmyadmin

apt-get install phpmyadmin

NOTE: if you get permission denied error, then use sudo with this command. To install any package or software in Ubuntu you need root access.

sudo apt-get install phpmyadmin

once you type and enter, it ask password for root user



To Remove/Delete an installed package

apt-get remove package-name

If i type

sudo apt-get remove phpmyadmin

It will remove phpmyadmin from my system (except configuration files).
To remove package as well as configuration files

apt-get --purge remove package-name

This command uninstall phpmyadmin as well as their configuration files.

Update the local package index with the latest changes
Ubuntu APT(Advanced Packaging Tool) is essentially a database of available packages from the repositories defined in the /etc/apt/sources.list file and in the /etc/apt/sources.list.d directory. To update this file you need to use update command.

sudo apt-get update

To update all the currently installed software packages

sudo apt-get upgrade

To check more about apt-get , you can read it’s manual.

 man apt-get

apt-get help

I hope these commands give them the idea about what is apt-get and how to manage package using apt-get package manager utility.