Grep Man Page - Newlines within patterns separate each pattern from the next. Grep searches the input files (standard input default) for lines that match the pattern , a regular expression as defined in regexp (7) with the addition of a newline.
Newlines within patterns separate each pattern from the next. Grep searches the input files (standard input default) for lines that match the pattern , a regular expression as defined in regexp (7) with the addition of a newline.