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Cake day: June 22nd, 2023

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  • Yes ed begat sed, but sed works differently. It didn’t replace ed. It did a different job.

    Ed loads the file into a buffer which you edit in a random access fashion and then save. Sed collects a list of commands and then streams the file line by line, executing the commands as they match lines. In your example nothing happens until you’ve entered the whole editing script.