Here is the query from my colleague again. What if I want to keep the last 5 hour modified file in the directory and move/copy the rest of the files.

you should tell your colleague to stop changing the requirements. things are now complicated enough that a perl solution would be better than a shell solution. see the other responses in the thread for pointers in that direction.

In reply to Re: Re: Re^5: Unix - Keep the last modified file in the directory and move/copy the rest of the files. by zengargoyle
in thread Unix - Keep the last modified file in the directory and move/copy the rest of the files. by hyliau

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