How To Install bash on Ubuntu 20.04
Introduction
In this tutorial we learn how to install bash on Ubuntu 20.04.
What is bash
bash is:
Bash is an sh-compatible command language interpreter that executes commands read from the standard input or from a file. Bash also incorporates useful features from the Korn and C shells (ksh and csh).
Bash is ultimately intended to be a conformant implementation of the IEEE POSIX Shell and Tools specification (IEEE Working Group 1003.2).
The Programmable Completion Code, by Ian Macdonald, is now found in the bash-completion package. Task: minimal
Package: bash Architecture: amd64 Version: 5.0-6ubuntu1 Multi-Arch: foreign Priority: required Essential: yes Section: shells Origin: Ubuntu Maintainer: Ubuntu Developers [email protected] Original-Maintainer: Matthias Klose [email protected] Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 1656 Pre-Depends: libc6 (>= 2.15), libtinfo6 (>= 6) Depends: base-files (>= 2.1.12), debianutils (>= 2.15) Recommends: bash-completion (>= 20060301-0) Suggests: bash-doc Conflicts: bash-completion (« 20060301-0) Replaces: bash-completion (« 20060301-0), bash-doc (<= 2.05-1) Filename: pool/main/b/bash/bash_5.0-6ubuntu1_amd64.deb Size: 638400 MD5sum: d2655b78815a8ccd61674828408d27cd SHA1: b1a0d6a9bae4b70616b93403be1f485742ba8162 SHA256: 3ee861fb5a1ea976e97a9038f785b43252bd4040cdd066ea1afe675ff7625ec8 Homepage: http://tiswww.case.edu/php/chet/bash/bashtop.html Description-en: GNU Bourne Again SHell Bash is an sh-compatible command language interpreter that executes commands read from the standard input or from a file. Bash also incorporates useful features from the Korn and C shells (ksh and csh).
Bash is ultimately intended to be a conformant implementation of the IEEE POSIX Shell and Tools specification (IEEE Working Group 1003.2).
The Programmable Completion Code, by Ian Macdonald, is now found in the bash-completion package. Task: minimal
There are three methods to install bash 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 bash Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install bash using apt-get by running the following command:
sudo apt-get -y install bash
Install bash Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install bash using apt by running the following command:
sudo apt -y install bash
Install bash 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 bash using aptitude by running the following command:
sudo aptitude -y install bash
How To Uninstall bash on Ubuntu 20.04
To uninstall only the bash package we can use the following command:
sudo apt-get remove bash
Uninstall bash And Its Dependencies
To uninstall bash and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove bash
Remove bash Configurations and Data
To remove bash configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge bash
Remove bash configuration, data, and all of its dependencies
We can use the following command to remove bash configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge bash
References
Summary
In this tutorial we learn how to install bash package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.