replace null to ""test"" in a file using unix

Question

I have below pattern in my file at different lines

""key"": null

I want to replaceu this to

""key"": ""test""

through linux

i used the below commands:

sed -i 's/ null / ""test"" /'
sed -i 's/ null / \"\"test\"\" /'

but failed.

vim_ · Accepted Answer · 2017-04-07 07:48:40Z

1

This should do it:

 sed -i 's/null/\"\"test\"\"/g' file.txt

answered Apr 7, 2017 at 7:48

vim_

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3 Comments

it is also removing the delimiter from the files, replacing comma to space

comma in where?

sorry that was my mistakes i used this wrongly, thanks @Arash