@example
md5sum [@var{option}]@dots{} [@var{file}]@dots{}
md5sum [@var{option}]@dots{} --check [@var{file}]
-md5sum [@var{option}]@dots{} --string=@var{string} @dots{}
@end example
For each @var{file}, @samp{md5sum} outputs the MD5 checksum, a flag
MD5 checksums, exit successfully. Otherwise exit with a status code
indicating there was a failure.
-@itemx --string=@var{string}
-@opindex --string
-Compute the message digest for @var{string}, instead of for a file. The
-result is the same as for a file that contains exactly @var{string}.
-
@item -t
@itemx --text
@opindex -t