How To Install mksh on CentOS 8

mksh is MirBSD enhanced version of the Korn Shell

Introduction

In this tutorial we learn how to install mksh on CentOS 8.

What is mksh

mksh is the MirBSD enhanced version of the Public Domain Korn shell (pdksh), a bourne-compatible shell which is largely similar to the original AT&T Korn shell. It includes bug fixes and feature improvements in order to produce a modern, robust shell good for interactive and especially script use, being a bourne shell replacement, pdksh successor and an alternative to the C shell.

We can use yum or dnf to install mksh on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install mksh.

Install mksh on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install mksh using dnf by running the following command:

sudo dnf -y install mksh

Install mksh on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install mksh using yum by running the following command:

sudo yum -y install mksh

How To Uninstall mksh on CentOS 8

To uninstall only the mksh package we can use the following command:

sudo dnf remove mksh

mksh Package Contents on CentOS 8

/bin/ksh
/etc/mkshrc
/etc/skel/.mkshrc
/usr/bin/lksh
/usr/bin/mksh
/usr/lib/.build-id
/usr/lib/.build-id/70
/usr/lib/.build-id/70/4dcd888ddbc6222a24d956719e4db54a128cd1
/usr/lib/.build-id/bd
/usr/lib/.build-id/bd/32a4cda2f535ef51053c40cadcf33c8637262a
/usr/share/doc/mksh
/usr/share/doc/mksh/dot.mkshrc
/usr/share/man/man1/ksh.1.gz
/usr/share/man/man1/lksh.1.gz
/usr/share/man/man1/mksh.1.gz

References

Summary

In this tutorial we learn how to install mksh on CentOS 8 using yum and dnf.