Find files opened by a process

You can find the files that a specific process has opened.

Get the PID

Find the PID of the process by running the following command. Alternatively you could use ps aux | grep <program> but this command only returns what you need:

$ ps -C <program> -o pid=

List the open files for that process

$ ls -l /proc/<pid>/fd

If the process you want to inspect is a privileged process, you will need elevated privileges to view its open files.