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Exercise: Quizz

35 - What is the difference between running the sed 's/foo/bar/' <file> command and the sed -i 's/foo/bar/' <file> command?


The first command will ask for a confirmation before each substitution, the second will not.
The first command will not make any change to the file, the second will modify the file.
The first command is case-sensitive, the second is not.
The first command will replace only the first occurrence of 'foo', the second command will replace all occurrences.