The introduction that we have of
sed is brief. Is it only used to replace text in files or should we also use it in other circumstances?
sed is a programming language in its own right so there is a lot more to it than search and replace. With that being said, however, it is good enough at this stage to simply use
sed as an extension of
grep which also enables you to edit the matches that you find. In that way, we use
sed as follows
sed "s/match/replace/g" file
Note that like
sed also can have arguments that change its behavior.