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Asked: 2026-06-01T05:47:57+00:00

I would like to replace blank spaces/white spaces in a string with commas. STR1=This

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I would like to replace blank spaces/white spaces in a string with commas.

STR1=This is a string

to 

STR1=This,is,a,string
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1 Answer

  1. Editorial Team

    Without using external tools:

    echo ${STR1// /,}

    Demo:

    $ STR1="This is a string"
$ echo ${STR1// /,}
This,is,a,string

    See bash: Manipulating strings.

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