What is the difference between --binary and the default of md5sum?

[Peng Yu]

Hi,

I don't see any difference between the two md5sum commands (on Mac OS).

~/linux/test/gnu/gnu/coreutils/md5sum/--binary$ ./main.sh
md5sum `which md5sum`
which md5sum
02389bdcb510f7a2667f94c4264bebd8  /opt/local/libexec/gnubin/md5sum
md5sum -b `which md5sum`
which md5sum
02389bdcb510f7a2667f94c4264bebd8 */opt/local/libexec/gnubin/md5sum

~/linux/test/gnu/gnu/coreutils/md5sum/--binary$ cat main.sh
#!/usr/bin/env bash

set -v
md5sum `which md5sum`
md5sum -b `which md5sum`

As mentioned at http://cygwin.com/cygwin-ug-net/using-textbinary.html,
the difference between --binary and default is only important on
windows, right?

-- 
Regards,
Peng