in reply to unique file ID

As long as your filesystem is mounted on a single machine, the easiest approach is to use the process ID (PID) in the filename. The PID is guaranteed to be unique per process, per machine.

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Re^2: unique file ID
by choroba (Cardinal) on Apr 30, 2013 at 11:03 UTC
    I usually use username + date/time + machine + PID on multiuser shared file systems.
    لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ
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