sed: Remove All Digits / Input From Input

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Q. How do I remove all digits or number from my text file or input using sed command?

A. You need to use regular expression to remove digits or number from input. For example, ‘s/[0-9]*//g’ will remove all numbers from the input.

Remove all digits

Type the following command:
$ echo 'This is a test 12335 and 669384 535xy4' | sed 's/[0-9]*//g'
Sample output:

This is a test  and  xy

You can remove all digits from a text file:
$ sed 's/[0-9]*//g' input.txt
$ sed 's/[0-9]*//g' input.txt > output.txt

Posted by: Vivek Gite

The author is the creator of nixCraft and a seasoned sysadmin, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.

6 comment

  1. Hi!
    I’m doing this:

    echo 'something=1234
    something=12345
    andsomething=1234&somethingelse&something=1234
    something=2345' | sed 's/something=1234[^0-9]/something=9999/g'
    

    The output is :

    something=1234
    something=12345
    andsomething=9999&somethingelse&something=1234
    something=2345

    And what I’m trying to get is :

    something=9999
    something=12345
    andsomething=9999&somethingelse&something=9999
    something=2345

    Why isn’t it working when the pattern is at the end of the line ? What a pain….
    Help, anyone ?

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