Similarly, and perhaps obviously to some, you can use that to check how many files that process has open in total: ls -al /proc/$PID/fd/ | wc -l Useful for ac

Similarly, and perhaps obviously to some, you can use that to check how many files that process has open in total: ls -al /proc/$PID/fd/ | wc -l Useful for actually knowing what that specific process has open and is respecting your Max Open Files settings. I'm looking at you Influx.