How To Install qemu on Ubuntu 18.04
Introduction
In this tutorial we learn how to install qemu on Ubuntu 18.04.
What is qemu
qemu 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. QEMU has two operating modes:
- User mode emulation: QEMU can launch Linux processes compiled for one CPU on another CPU.
- Full system emulation: QEMU emulates a full system, including a processor and various peripherals. It enables easier testing and debugging of system code. It can also be used to provide virtual hosting of several virtual machines on a single server.
As QEMU requires no host kernel patches to run, it is very safe and easy to use.
This package is a metapackage depending on all qemu-related packages.
There are three methods to install qemu 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 qemu 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 using apt-get by running the following command:
sudo apt-get -y install qemu
Install qemu Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install qemu using apt by running the following command:
sudo apt -y install qemu
Install qemu 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 using aptitude by running the following command:
sudo aptitude -y install qemu
How To Uninstall qemu on Ubuntu 18.04
To uninstall only the qemu package we can use the following command:
sudo apt-get remove qemu
Uninstall qemu And Its Dependencies
To uninstall qemu and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove qemu
Remove qemu Configurations and Data
To remove qemu configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge qemu
Remove qemu configuration, data, and all of its dependencies
We can use the following command to remove qemu configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge qemu
References
Summary
In this tutorial we learn how to install qemu package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
