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Unix, Xenix and ODT General FAQ

This article is from a FAQ concerning SCO operating systems. While some of the information may be applicable to any OS, or any Unix or Linux OS, it may be specific to SCO Xenix, Open Desktop or Openserver.

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How do I find out what IP address a user logged in from?

In OSR5, there are options to who, w, last, and finger which provide this information. In a program, you can fetch this information from /etc/utmpx for the appropriate definitions.

The farther back you go through older versions, the less likely you are to find this sort of information.

Current versions have these options as summarized by Bela Lubkin:

Many OpenServer Release 5 utilities can show you the host name; they just don't do so by default:

• who -x (hostname truncated)
• who -xu (full length)
• who -mxu (full length; this tty)
• w -x [user ...] (truncated)
• w -X [user ...] (full length; 5.0.4 and later)
• finger [-s user ...] (truncated)
• finger -l [user ...] (full length)
• last -W /etc/wtmpx [user] (truncated; login history)
• last -W /etc/utmpx [user] (truncated; current)
• last -H hostname [user] (history for "hostname", use full name even though output will be truncated)

2 comments

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Mon Mar 28 11:27:15 2005:   anonymous


g sf errrr 6 Ýop♪}



Thu Jul 22 06:01:01 2010:   jai


bash-3.00$ finger -l
Login name: test1
Directory: /home/test1 Shell: /usr/bin/ksh
On since Jul 22 11:48:16 on pts/0, 33 minutes Idle Time
from intense-895645e
On since Jul 22 11:48:22 on pts/1, 33 minutes Idle Time
from 192.168.5.165:0.0
No Plan.

Login name: test3
Directory: /home/test3 Shell: /usr/bin/ksh
On since Jul 22 11:57:31 on pts/2
from 192.168.5.178
No Plan.

Login name: root
Directory: / Shell: /usr/bin/ksh
On since Jul 21 12:38:04 on pts/3, 23 hours Idle Time
from 192.168.1.43
No Plan.

Login name: uniserve
Directory: /home/uniserve Shell: /usr/bin/ksh
On since Jul 21 13:52:34 on pts/5, 22 hours Idle Time
from 192.168.1.137
On since Jul 21 14:44:00 on pts/6, 21 hours Idle Time
from 192.168.1.137
No Plan.
=============================================

Its really fantastic thanks a lot....i felt very happy about this....
also who -X also give the IP address thankyou....
jai.......

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