Mac- Strange ~/devnull file?

Discussion in 'macOS' started by applepie555, Aug 12, 2013.

  1. applepie555, Aug 12, 2013
    Last edited: Aug 12, 2013

    applepie555 macrumors regular

    Aug 7, 2012
    I booted up my mac and found a file called 'devnull' in my user folder, which was 13gb. I tried opening it in textedit to see what it was but it kept freezing, as well as finder. I tried to delete it but finder didn't seem to want to. I finally was able to eliminate it using rm ~/devnull

    It's gone now, but now I notice finder is crashing quite often.
    What is this "devnull" file, and is it bad that I deleted it??
  2. wrldwzrd89 macrumors G5


    Jun 6, 2003
    Solon, OH
    This sounds like a runaway script that's improperly written. Check Activity Monitor and look for processes named "bash", "sh", "tcsh", etc.
  3. pmau macrumors 65816

    Nov 9, 2010
    The way to redirect output to "nothing" on unix like system is to do somthing like:

    ls -la >/dev/null

    So, some application, probably a "launchd" agent or daemon did something wrong.

    If you are a little motivated, check your login items for some strange third-party junk you recently installed.

    Deleting the open file while the app in question is running will not free the diskspace unless you logout or restart.

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