How To Install molly-guard on Ubuntu 20.04
Introduction
In this tutorial we learn how to install molly-guard on Ubuntu 20.04.
What is molly-guard
molly-guard is:
The package installs a shell script that overrides the existing shutdown/reboot/halt/poweroff/coldreboot/pm-hibernate/pm-suspend* commands and first runs a set of scripts, which all have to exit successfully, before molly-guard invokes the real command.
One of the scripts checks for existing SSH sessions. If any of the four commands are called interactively over an SSH session, the shell script prompts you to enter the name of the host you wish to shut down. This should adequately prevent you from accidental shutdowns and reboots.
molly-guard diverts the real binaries to /lib/molly-guard/. You can bypass molly-guard by running those binaries directly.
There are three methods to install molly-guard 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 molly-guard Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install molly-guard using apt-get by running the following command:
sudo apt-get -y install molly-guard
Install molly-guard Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install molly-guard using apt by running the following command:
sudo apt -y install molly-guard
Install molly-guard 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 molly-guard using aptitude by running the following command:
sudo aptitude -y install molly-guard
How To Uninstall molly-guard on Ubuntu 20.04
To uninstall only the molly-guard package we can use the following command:
sudo apt-get remove molly-guard
Uninstall molly-guard And Its Dependencies
To uninstall molly-guard and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove molly-guard
Remove molly-guard Configurations and Data
To remove molly-guard configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge molly-guard
Remove molly-guard configuration, data, and all of its dependencies
We can use the following command to remove molly-guard configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge molly-guard
References
Summary
In this tutorial we learn how to install molly-guard package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.
