Very Computer

      -q             (Quiet) Do not write anything to the standard output,
                     regardless of matching lines.  Exit with zero status
                     upon finding the first matching line.

I want diff (or whatever command) to exit upon finding the first non-
matching bits.  How?

Thanks,

Ed Moore
Hewlett-Packard
Vancouver, WA, USA

|> I need a way to compare two large files to see if they are identical.
|> grep's -q option is sort of the reverse of what I need.

|>       -q       (Quiet) Do not write anything to the standard output,
|>                regardless of matching lines.  Exit with zero status
|>                upon finding the first matching line.

|> I want diff (or whatever command) to exit upon finding the first non-
|> matching bits.  How?

NAME
     cmp - perform a byte-by-byte comparison of two files.

OPTIONS
     -s   Silent. Print nothing for  differing  files;  set  exit
          codes only.

DIAGNOSTICS
     Exit code 0 is returned for identical files, 1 for different
     files,  and  2 for an inaccessible or missing argument, or a
     system error.
--
Andreas Schwab                                      "And now for something

Regards,

Hamilton Laboratories, 21 Shadow Oak Drive, Sudbury, MA  01776-3165, USA