For an OS that has a /proc, you can File::Find on the /proc/\d+/fd/ nodes. They will be a symlink to the opened files of each process currently running.

# ls -l /proc/####/fd/
total 3
lr-x------ 1 root root 64 Dec 26 02:46 0 -> /proc/kmsg
lrwx------ 1 root root 64 Dec 26 02:46 1 -> socket:[11384]
lr-x------ 1 root root 64 Dec 26 02:46 2 -> /boot/System.map-2.6.14-2-
+k7

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In reply to Re: how to know the files opened by a process by idsfa
in thread how to know the files opened by a process by swaroop

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