To find a pattern that is more than one word long, enclose the string with single or double quotation marks:
$ grep "Louisa May" extensions Louisa May Alcott x74236 $ |
grep can search for a string in groups of files. When it finds a pattern that matches in more than one file, it prints the name of the file, followed by a colon, then the line matching the pattern:
$ grep ar * actors:Humphrey Bogart alaska:Alaska is the largest state in the United States. wilde:book. Books are well written or badly written. $ |