How To Install qemu-user on Ubuntu 20.04
Introduction
In this tutorial we learn how to install qemu-user on Ubuntu 20.04.
What is qemu-user
qemu-user is:
QEMU is a fast processor emulator: currently the package supports ARM, CRIS, i386, M68k (ColdFire), MicroBlaze, MIPS, PowerPC, SH4, SPARC and x86-64 emulation. By using dynamic translation it achieves reasonable speed while being easy to port on new host CPUs.
This package provides the user mode emulation binaries. In this mode QEMU can launch Linux processes compiled for one CPU on another CPU.
If qemu-user-binfmt package is also installed, it will register binary format handlers from this qemu-user package with the kernel so it will be possible to run foreign binaries directly. However, this might not be suitable for using inside foreign chroots, in which case it is possible to use qemu-user-static package instead of qemu-user-binmft, – qemu-user-static will register statically linked binfmt handlers instead.
Package: qemu-user Architecture: amd64 Version: 1:4.2-3ubuntu6 Multi-Arch: foreign Priority: optional Section: universe/misc Source: qemu Origin: Ubuntu Maintainer: Ubuntu Developers [email protected] Original-Maintainer: Debian QEMU Team [email protected] Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 167477 Depends: libc6 (>= 2.29), libgcc-s1 (>= 4.7), libglib2.0-0 (>= 2.37.1), libgnutls30 (>= 3.6.12), libstdc++6 (>= 5.2), zlib1g (>= 1:1.1.4) Recommends: qemu-user-binfmt Suggests: sudo Filename: pool/universe/q/qemu/qemu-user_4.2-3ubuntu6_amd64.deb Size: 16144316 MD5sum: 30675b12d84991dfa4b666d51b6448af SHA1: 9368e0f7ded6b9d353e813a1affc8648f3a3d7c5 SHA256: 0906bbb87c6e465ee8105340566e9a2c3fd5aa2875b1bbd8e7ba288c771a41be Homepage: http://www.qemu.org/ Description-en: QEMU user mode emulation binaries QEMU is a fast processor emulator: currently the package supports ARM, CRIS, i386, M68k (ColdFire), MicroBlaze, MIPS, PowerPC, SH4, SPARC and x86-64 emulation. By using dynamic translation it achieves reasonable speed while being easy to port on new host CPUs.
This package provides the user mode emulation binaries. In this mode QEMU can launch Linux processes compiled for one CPU on another CPU.
If qemu-user-binfmt package is also installed, it will register binary format handlers from this qemu-user package with the kernel so it will be possible to run foreign binaries directly. However, this might not be suitable for using inside foreign chroots, in which case it is possible to use qemu-user-static package instead of qemu-user-binmft, – qemu-user-static will register statically linked binfmt handlers instead.
There are three methods to install qemu-user 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 qemu-user Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install qemu-user using apt-get by running the following command:
sudo apt-get -y install qemu-user
Install qemu-user Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install qemu-user using apt by running the following command:
sudo apt -y install qemu-user
Install qemu-user 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 qemu-user using aptitude by running the following command:
sudo aptitude -y install qemu-user
How To Uninstall qemu-user on Ubuntu 20.04
To uninstall only the qemu-user package we can use the following command:
sudo apt-get remove qemu-user
Uninstall qemu-user And Its Dependencies
To uninstall qemu-user and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove qemu-user
Remove qemu-user Configurations and Data
To remove qemu-user configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge qemu-user
Remove qemu-user configuration, data, and all of its dependencies
We can use the following command to remove qemu-user configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge qemu-user
References
Summary
In this tutorial we learn how to install qemu-user package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.
