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Old 12-12-2004, 08:21 PM   #1
Registered: Jun 2004
Location: new jersey
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/var/log/wtmp ???

today i was looking around in /var to see if i could free up some space by removing any log files that might be too big.... i noticed a file in /var/log called wtmp that was over 10 megabytes. does anyone know if this is a nessacary file for the system, or even what program uses? if its not used for anything important, its gettin deleted. (when you have an 8 gig hard drive, 10 megs is nice to free up...hah) thanx
Old 12-12-2004, 09:46 PM   #2
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wtmp seems to be written in binary, or some such format which can't be read by text editors. To see what's in that file, use the strings command.

It works like this: strings /var/log/wtmp.

The return seems to be related to who logged in, and the kernel version which is up an running.

My recommendation: don't delete the file; just zero it out like this:
su to root
cd to /var/log
/dev/null > wtmp

The last command overwrites /var/log/wtmp with nothing (you get an empty file, but leave the file in place).
Old 12-12-2004, 10:07 PM   #3
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Old 12-13-2004, 10:07 AM   #4
Registered: Nov 2004
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$ man wtmp
will give you more information.


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