Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!usc!rutgers!att!drutx!vqh
From: vqh@drutx.ATT.COM (Viet Hoang)
Newsgroups: comp.unix.xenix
Subject: Re: Why is wtmp so big?
Message-ID: <4628@drutx.ATT.COM>
Date: 7 Dec 89 16:07:17 GMT
References: <436@khijol.UUCP>
Organization: AT&T, Denver, CO
Lines: 17

From article <436@khijol.UUCP>, by erc@khijol.UUCP (Edwin R. Carp):
> In article <413@tabbs.UUCP> aris@tabbs.UUCP (Aris Stathakis) writes:
>>From article <1226@ispi.UUCP>, by jbayer@ispi.UUCP (Jonathan Bayer):
>>
>>Since it is a binary file, this is no trivial task.
> 
> here's a piece of trivial code to do it:

Since it's trivial, we might as well do it with shell, assuming sizeof(utmp)
is 32 bytes and we want to keep 10 entries:
  tail -320c /etc/wtmp >/tmp/tmp.wtmp
  cp /tmp/tmp.wtmp /etc/wtmp

V. Hoang
vqh@att.com
-- 
V. Hoang, AT&T Denver, vqh@dwx3bn.att.com