Is there any Linux command that can list what files are being actively accessed (actively being read/written)?

E.g., while watching a video from web browser, I want to know where the cache file being written to. Or when my chromium-browser starts, I want to know what files it is reading. thx.

2 Answers 2


If you want to list files opened by specific process, just check /proc/$PID/fd directory.

If you want to trace file operations of specific process (and it's childs) you can use strace:

strace -efile -f -p$PID

Check out the lsof command. This will list open files and what processes have them open.

Check here for usage.

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