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Re: /var/log/wtmp problem
- From: Jurgen Defurne <jurgen dot defurne at philips dot com>
- To: René Berber <rberber at prodigy dot net dot mx>
- Cc: cygwin at cygwin dot com
- Date: Mon, 12 Sep 2005 10:13:49 +0200
- Subject: Re: /var/log/wtmp problem
Do you happen to know from which package 'last' is part ?
I will need to build this program myself, because I am unable
to upgrade my Cygwin environment and install the package
(due to operational constraints).
Thanks for the info,
Jurgen.
René Berber <rberber@prodigy.net.mx>
Sent by:
cygwin-owner@cygwin.com
2005-09-12 09:15 AM
To
cygwin@cygwin.com
cc
Subject
Re: /var/log/wtmp problem
Classification
Jurgen Defurne wrote:
> Hello,
>
> Can someone explain for what /var/log/wtmp is used ?
>
> It seems that this file grows very quickly in our Cygwin environment,
and
> I
> want to find out which programs write to this file. /var/log/wtmp gets
> an update almost every two seconds here.
>
> We do not use very much programs, I think this covers the complete
> list :
> - screen (no reference to wtmp found in info)
> - bash (standard shell)
> - Perl (background programs/ exec ?)
> - ssh
> - rxvt
> - watch
You can find some info about it in man last:
NAME
last, lastb - show listing of last logged in users
SYNOPSIS
last [-R] [-num] [ -n num ] [-adiox] [ -f file ] [name...] [tty...]
lastb [-R] [-num] [ -n num ] [ -f file ] [-adiox] [name...]
[tty...]
DESCRIPTION
Last searches back through the file /var/log/wtmp (or the file
desig-
nated by the -f flag) and displays a list of all users logged in
(and
out) since that file was created. Names of users and tty's
can be
given, in which case last will show only those entries matching
the
arguments. Names of ttys can be abbreviated, thus last 0 is the
same
as last tty0.
...
If your wtmp is growing that much you have a problem I haven't seen, take
a look
at the output of "last | head" .
HTH
--
René Berber
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