Remove only those whitespaces which are appeared after each comma from a string in bash

Question

I am new in bash and would like to know best way to remove those white spaces which are available after each comma in string. For e.g. I have following input string :

abc, xyz, cdf axy bnz cnm

Resultant string should be :

abc,xyz,cdf axy bnz cnm

sseLtaH · Accepted Answer · 2022-07-20 05:45:40Z

1

You can use sed for this

$ sed -E 's/, +/,/g' input_file abc,xyz,cdf axy bnz cnm

answered Jul 20, 2022 at 5:45

sseLtaH

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1 Comment

xpusostomos Over a year ago

sed 's/, */,/g'

Shawn · Accepted Answer · 2022-07-20 05:45:26Z

Turn on the extglob option and do it with parameter expansion pattern replacement:

#!/usr/bin/env bash str="abc, xyz, cdf axy bnz cnm" shopt -s extglob printf "%s\n" "${str//,+([[:space:]])/,}"

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