linux - replace null to ""test"" in a file using unix -
i have below pattern in file @ different lines
""key"": null i want replaceu
""key"": ""test"" through linux
i used below commands:
sed -i 's/ null / ""test"" /' sed -i 's/ null / \"\"test\"\" /' but failed.
this should it:
 sed -i 's/null/\"\"test\"\"/g' file.txt 
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