ksh Archives - IT Nursery

Programming, shell

IT Nursery

How to get the second column from command output?

My command’s output is something like: 1540 "A B" 6 "C" 119 "D" The first column is always a number, followed by a ...

May 31, 2022
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Select unique or distinct values from a list in UNIX shell script

I have a ksh script that returns a long list of values, newline separated, and I want to see only the unique/distinct values. ...

May 17, 2022
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How to detect if a script is being sourced

I have a script where I do not want it to call exit if it’s being sourced. I thought of checking if $0 ...

May 17, 2022
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What is the difference between $(command) and `command` in shell programming?

To store the output of a command as a variable in sh/ksh/bash, you can do either var=$(command) or var=`command` What’s the difference if ...

May 16, 2022
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How to mkdir only if a directory does not already exist?

I am writing a shell script to run under the KornShell (ksh) on AIX. I would like to use the mkdir command to ...

April 10, 2022
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