Comments on: 10 tr Command Examples in Linux

By: Shalinda Fernando

Shalinda Fernando — Tue, 13 Dec 2022 09:45:16 +0000

Just to inform there is a typo in the 6th point. Have a look:

$ cat domains.txt | tr -s ” <= Original
$ cat domains.txt | tr -s '.' <= Edited: Notice the "." (dot)

Output:

www.tecmint.com www.fossmint.com www.linuxsay.com

By: Ravi Saive

Ravi Saive — Thu, 03 Nov 2022 06:38:21 +0000

In reply to kl.

@kl,

Thanks, corrected the command in the article…

By: kl

kl — Thu, 03 Nov 2022 06:34:09 +0000

Thanks for the great examples. There is a small typo in the first example.

You do

$ cat linux.txt

linux is my life
linux has changed my life
linux is best and everthing to me..:)

and then

$ cat domains.txt | tr [:lower:] [:upper:]

LINUX IS MY LIFE
LINUX HAS CHANGED MY LIFE
LINUX IS BEST AND EVERTHING TO ME..:)

This should be instead.

$ cat linux.txt | tr [:lower:] [:upper:]

By: bart

bart — Sat, 28 May 2022 13:00:18 +0000

Hi, How can I remove duplicates of the words from a large text file using the tr command?

By: Phil Headford

Phil Headford — Sat, 16 Oct 2021 02:41:56 +0000

I have a string that I assigned to a key combination, ctrl+k. The intention is to take the selected (highlighted) text in a textbox in one application, strip out all dots, replace all spaces with underscores, then place the amended text in the clipboard. the line is:

xcopy -o | tr " " "_" | tr -d "." | xcopy -selection clipboard

When I test the line in a terminal, it works fine. If I try it using ctrl+k, it leaves dots in the output string in the clipboard. This is puzzling me.