Almost every time I split a large file >1G into say 200k chunks, then ftp it 
to a server and then:

 cat 1 2 3 4 5 6 7 > completefile ; md5sum -c completefile

if fails.  Checking the split files in turn I often find 1 or two chunks that 
fail on their own md5 checks.  Despite that the concatenated file often works 
(e.g. if it is a video file it'll play alright).

Can you explain this?  Should I be using a different check to verify the 
integrity of the ftp'd file?
-- 
Regards,
Mick

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