How To Install libnss-unknown on Ubuntu 20.04
Introduction
In this tutorial we learn how to install libnss-unknown on Ubuntu 20.04.
What is libnss-unknown
libnss-unknown is:
nss-unknown is a small library to gracefully handle unknown uids
This library is very useful in host <=> guest container build environments, where shifting UIDs/GIDs result in a mismatch in between
There are three methods to install libnss-unknown 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 libnss-unknown Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install libnss-unknown using apt-get by running the following command:
sudo apt-get -y install libnss-unknown
Install libnss-unknown Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install libnss-unknown using apt by running the following command:
sudo apt -y install libnss-unknown
Install libnss-unknown 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 libnss-unknown using aptitude by running the following command:
sudo aptitude -y install libnss-unknown
How To Uninstall libnss-unknown on Ubuntu 20.04
To uninstall only the libnss-unknown package we can use the following command:
sudo apt-get remove libnss-unknown
Uninstall libnss-unknown And Its Dependencies
To uninstall libnss-unknown and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove libnss-unknown
Remove libnss-unknown Configurations and Data
To remove libnss-unknown configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge libnss-unknown
Remove libnss-unknown configuration, data, and all of its dependencies
We can use the following command to remove libnss-unknown configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge libnss-unknown
References
Summary
In this tutorial we learn how to install libnss-unknown package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.