[ILUG] Request to ILUG gurus: comparing files on different machines

[Lars Hecking]

Timothy Murphy writes:
> I want to determine which files in directory foo/ on remote machine A
> are duplicates of files in directory foo/ on my current machine.
> What is the simplest way to do this, please?
 
 machine A: md5sum foo/* >foo.md5
 copy foo.md5 to machine B
 machine B: md5sum 0c foo.md5