`grep' searches the input files for lines containing a match to a given
pattern list. When it finds a match in a line, it copies the line to
standard output (by default), or produces whatever other sort of output
you have requested with options.
Though `grep' expects to do the matching on text, it has no limits
on input line length other than available memory, and it can match
arbitrary characters within a line. If the final byte of an input file
is not a newline, `grep' silently supplies one. Since newline is also
a separator for the list of patterns, there is no way to match newline
characters in a text.
automatically generated by