Interview Q&A / Linux & Shell
Linux & Shell interview questions
Permissions, processes, pipes and the commands you are expected to know cold.
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- How do you replace text in a file using sed?
sed 's/old/new/' replaces the first match on each line; add g to replace every match on a line. Add -i to edit the file in place, ideally with a backup suffix like -i.bak, otherwise sed only prints the changed text.
BeginnerQuick answer1 min read