How To Install libpam-ssh on Ubuntu 18.04
Introduction
In this tutorial we learn how to install libpam-ssh on Ubuntu 18.04.
What is libpam-ssh
libpam-ssh is:
This pluggable authentication module (PAM) provides single sign-on using secure shell (SSH) keys:
- during authentication, the user types a SSH passphrase and is authenticated if the passphrase successfully decrypts the user’s SSH private keys;
- in session phase, a ssh-agent process is started and decrypted keys are added, and thus the user can SSH to other hosts that accept key authentication without typing more passwords for the entire session.
There are three methods to install libpam-ssh on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install libpam-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 libpam-ssh using apt-get by running the following command:
sudo apt-get -y install libpam-ssh
Install libpam-ssh Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install libpam-ssh using apt by running the following command:
sudo apt -y install libpam-ssh
Install libpam-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 libpam-ssh using aptitude by running the following command:
sudo aptitude -y install libpam-ssh
How To Uninstall libpam-ssh on Ubuntu 18.04
To uninstall only the libpam-ssh package we can use the following command:
sudo apt-get remove libpam-ssh
Uninstall libpam-ssh And Its Dependencies
To uninstall libpam-ssh and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove libpam-ssh
Remove libpam-ssh Configurations and Data
To remove libpam-ssh configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge libpam-ssh
Remove libpam-ssh configuration, data, and all of its dependencies
We can use the following command to remove libpam-ssh configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge libpam-ssh
References
Summary
In this tutorial we learn how to install libpam-ssh package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
