Here's a handy snippet to get all file descriptors opened by a particular process in a linux system:
[sudo] ls -l /proc/`pgrep <PROGRAM NAME>`/fd
pgrep command returns a PID of a running program by its name. If you're trying to use it for scripts (e.g.
node myApp.js), try to add the
-f option to search by entire run commandline, not just the executable name (which would be just
node in my example):
[sudo] ls -l /proc/`pgrep -f myApp`/fd