How To Install ssh on Ubuntu 20.04
Introduction
In this tutorial we learn how to install ssh on Ubuntu 20.04.
What is ssh
ssh is:
This metapackage is a convenient way to install both the OpenSSH client and the OpenSSH server. It provides nothing in and of itself, so you may remove it if nothing depends on it.
Package: ssh Architecture: all Version: 1:8.2p1-4 Multi-Arch: foreign Priority: optional Section: net Source: openssh Origin: Ubuntu Maintainer: Ubuntu Developers [email protected] Original-Maintainer: Debian OpenSSH Maintainers [email protected] Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 117 Pre-Depends: dpkg (>= 1.17.5) Depends: openssh-client (>= 1:8.2p1-4), openssh-server (>= 1:8.2p1-4) Filename: pool/main/o/openssh/ssh_8.2p1-4_all.deb Size: 5072 MD5sum: 8458a9ef29438a18bc9b5147b8c07c21 SHA1: aaaadb79c9d54f3b74d0c5ad6248f364514384ef SHA256: 0b95e6a28e5d081c277ec84217c4662546e58b2ea9a498533bdbcea8f835fb67 Homepage: http://www.openssh.com/ Description-en: secure shell client and server (metapackage) This metapackage is a convenient way to install both the OpenSSH client and the OpenSSH server. It provides nothing in and of itself, so you may remove it if nothing depends on it.
There are three methods to install ssh on Ubuntu 20.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install ssh Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install ssh using apt-get by running the following command:
sudo apt-get -y install ssh
Install ssh Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install ssh using apt by running the following command:
sudo apt -y install ssh
Install ssh Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install ssh using aptitude by running the following command:
sudo aptitude -y install ssh
How To Uninstall ssh on Ubuntu 20.04
To uninstall only the ssh package we can use the following command:
sudo apt-get remove ssh
Uninstall ssh And Its Dependencies
To uninstall ssh and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove ssh
Remove ssh Configurations and Data
To remove ssh configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge ssh
Remove ssh configuration, data, and all of its dependencies
We can use the following command to remove ssh configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge ssh
References
Summary
In this tutorial we learn how to install ssh package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.