How to install KornShell (KSH) on Ubuntu!

Created September 20, 2021

What is KSH?

Ksh (KornShell) is a UNIX shell developed by David Korn at Bell Labs in the early 80. Initially developed from bourne shell source code.


KSH is available on Ubuntu repository. To install ksh on Ubuntu Linux we can do the following commands.

First, let’s update apt metadata using command below.

sudo apt-get update

Install ksh using command below

sudo apt-get install ksh

Of course you can also use apt instead of apt-get to install ksh.

sudo apt install ksh

Using KSH

After successfully install ksh we can start using ksh by running ksh from current shell.


To check what is the running shell we can use command below

ps -p $$

It should provide output similar to output below

    PID TTY          TIME CMD
   7457 pts/0    00:00:00 ksh

That’s it, you have successfully installed KSH on your Ubuntu Server and you can start using it!

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