print lines matching a pattern

grep searches the named input FILEs (or standard input if no files are named, or if a single hyphen-minus
(-) is given as file name) for lines containing a match to the given PATTERN.  By  default,  grep  prints
the matching lines.

-I     Process  a  binary  file  as  if  it  did  not  contain  matching  data; this is equivalent to the
       --binary-files=without-match option.