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I want to create a bugreport using ubuntu-bug and I would like to include the log files of Gnome Display Manager (GDM) which I found in /var/log/gdm. To minimize the noise that may be in the logs I would like to empty them before I reproduce the bug.

What is the best way to empty the log files?

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up vote 1 down vote accepted

There are several ways to do this. You can move the log file to a backup with

sudo mv gdm.log gdm.log.old

and then you can create an empty file with

sudo touch gdm.log
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Do you know if it is safe to delete them? If so, which files - all in the directory? –  JJD Feb 12 '12 at 12:28
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The files ending on .[0-9] are older logs (zipped files). Any log you delete here should be recreated when needed by the system so it should be safe. Always better to create a backup though ;) –  Rinzwind Feb 12 '12 at 14:47
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