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Top Forums Shell Programming and Scripting Capture IP and command type in linux script Post 302545086 by agama on Saturday 6th of August 2011 09:42:31 AM
Old 08-06-2011
You'll need the who command to get information about where they are logged in from. Who will show the host name, and only the IP address if it cannot translate it. Output looks like this:

Code:
scooter  :0           Jul 18 10:55 (console)
scooter  pts/0        Jul 18 10:55
scooter  pts/1        Jul 21 22:38 (spot)
scooter  pts/2        Aug  2 14:51
scooter  pts/3        Aug  3 09:57
scooter  pts/4        Aug  6 09:27 (spot)
drr      pts/5        Aug  6 09:30 (192.168.1.7)
scooter  pts/7        Jul 26 23:27 (spot)

The IP/host of that the session is coming from is shown in the last column if it's not local (may differ on non-linux hosts). You'll need to write a script that combines the output from w based on the tty (pts in this case) if you want to display both the "what" and the "where from" information at the same time.

If your script needs to port, be advised that output from who on a FreeBSD system is different -- it has a more consistent output showing all "sources" not just remote ones. Also, the tty listed by w on FreeBSD is a short name p4 rather than ttyp4 where the who command lists the full name.
 

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PTS_QUIT(1)						       AFS Command Reference						       PTS_QUIT(1)

NAME
pts_quit - Exit from pts interactive mode SYNOPSIS
pts quit [-cell] <cell name> [-noauth] [-localauth] [-force] pts q [-c] <cell name> [-n] [-l] [-f] DESCRIPTION
The pts quit command exits from pts interactive mode. The command can be run from the command line or interactively, but on the command line it does nothing and is therefore of questionable utility. CAUTIONS
Prior to OpenAFS 1.4.5 and OpenAFS 1.5.23, the pts quit command was only available on Unix or Linux and when OpenAFS was compiled with the supergroups option (disabled by default). As of OpenAFS 1.4.5 and 1.5.23, it is always available. OPTIONS
Although they have no effect, pts quit takes the following standard pts options: -cell <cell name> Names the cell in which to run the command. For more details, see pts(1). -force Enables the command to continue executing as far as possible when errors or other problems occur, rather than halting execution at the first error. -help Prints the online help for this command. All other valid options are ignored. -localauth Constructs a server ticket using a key from the local /etc/openafs/server/KeyFile file. Do not combine this flag with the -cell or -noauth options. For more details, see pts(1). -noauth Assigns the unprivileged identity anonymous to the issuer. For more details, see pts(1). OUTPUT
This command produces no output. EXAMPLES
Here is an example of a pts interactive session: % pts interactive pts> quit % SEE ALSO
pts(1), pts_interactive(1) COPYRIGHT
Copyright 2007 Jason Edgecombe <jason@rampaginggeek.com> This documentation is covered by the BSD License as written in the doc/LICENSE file. This man page was written by Jason Edgecombe for OpenAFS. OpenAFS 2014-04-08 PTS_QUIT(1)
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