How To Install systemd-sysv on Ubuntu 20.04
Introduction
In this tutorial we learn how to install systemd-sysv on Ubuntu 20.04.
What is systemd-sysv
systemd-sysv is:
systemd is a system and service manager for Linux. It provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux control groups, maintains mount and automount points and implements an elaborate transactional dependency-based service control logic.
systemd is compatible with SysV and LSB init scripts and can work as a drop-in replacement for sysvinit.
This package provides the manual pages and links needed for systemd to replace sysvinit. Installing systemd-sysv will overwrite /sbin/init with a link to systemd. Task: minimal, ubuntu-core
Package: systemd-sysv Architecture: amd64 Version: 245.4-4ubuntu3 Multi-Arch: foreign Priority: important Section: admin Source: systemd Origin: Ubuntu Maintainer: Ubuntu Developers [email protected] Original-Maintainer: Debian systemd Maintainers [email protected] Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 168 Pre-Depends: systemd Depends: systemd (= 245.4-4ubuntu3) Recommends: libpam-systemd, libnss-systemd Conflicts: file-rc, systemd-shim, sysvinit-core, upstart (« 1.13.2-0ubuntu10~) Replaces: sysvinit-core, upstart (« 1.13.2-0ubuntu10~) Filename: pool/main/s/systemd/systemd-sysv_245.4-4ubuntu3_amd64.deb Size: 10276 MD5sum: cb7c80872158929871950ae68e2977be SHA1: 35c5e3f685f5e1317c8293ce91275a0a58684c57 SHA256: 9a5c1cce007f227ff52a267433660360a43e1b6b775cfc8aa1a40c36ea69380e Homepage: https://www.freedesktop.org/wiki/Software/systemd Description-en: system and service manager - SysV links systemd is a system and service manager for Linux. It provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux control groups, maintains mount and automount points and implements an elaborate transactional dependency-based service control logic.
systemd is compatible with SysV and LSB init scripts and can work as a drop-in replacement for sysvinit.
This package provides the manual pages and links needed for systemd to replace sysvinit. Installing systemd-sysv will overwrite /sbin/init with a link to systemd. Task: minimal, ubuntu-core
There are three methods to install systemd-sysv 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 systemd-sysv Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install systemd-sysv using apt-get by running the following command:
sudo apt-get -y install systemd-sysv
Install systemd-sysv Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install systemd-sysv using apt by running the following command:
sudo apt -y install systemd-sysv
Install systemd-sysv 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 systemd-sysv using aptitude by running the following command:
sudo aptitude -y install systemd-sysv
How To Uninstall systemd-sysv on Ubuntu 20.04
To uninstall only the systemd-sysv package we can use the following command:
sudo apt-get remove systemd-sysv
Uninstall systemd-sysv And Its Dependencies
To uninstall systemd-sysv and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove systemd-sysv
Remove systemd-sysv Configurations and Data
To remove systemd-sysv configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge systemd-sysv
Remove systemd-sysv configuration, data, and all of its dependencies
We can use the following command to remove systemd-sysv configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge systemd-sysv
References
Summary
In this tutorial we learn how to install systemd-sysv package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.
