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Top Forums Shell Programming and Scripting Script to capture userids logged on & killing as well Post 302384962 by EAGL€ on Wednesday 6th of January 2010 06:50:48 PM
Old 01-06-2010
this is something that came into my mind before but i didnt seriously think about it.
"who -u" gives the users who logged into a system anytime. I tried to write one script now and then tested it, but as im only user logged in test server i couldnt kill my login pid, should try later Smilie

try this:

Code:
#!/bin/bash
who -u | /usr/xpg4/bin/awk '/SPECIFIC_USER_IP/ {gsub("^\(|\)$","",$8);print($0)}' OFS="\t" > users.txt
user_ip=`/usr/xpg4/bin/awk '{print($8)}' users.txt`
pid=`/usr/xpg4/bin/awk' {print($7)}' users.txt`
if [ -e "$user_ip" ]; then
kill -9 $pid
fi

Note: you can use the user name in 2nd column instead of ip address in 8th column of "who -u" output
Code:
shell>who -u
root       pts/1        Jan  6 23:55   .     9492       (192.168.1.24)

Regards

Last edited by EAGL€; 01-06-2010 at 07:56 PM..
 

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getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME
getusershell, setusershell, endusershell - get legal user shells SYNOPSIS
#include <unistd.h> char *getusershell(void); void setusershell(void); void endusershell(void); DESCRIPTION
The getusershell() function returns a pointer to a legal user shell as defined by the system manager in the file /etc/shells. If /etc/shells does not exist, the following locations of the standard system shells are used in its place: /bin/bash /bin/csh /bin/jsh /bin/ksh /bin/ksh93 /bin/pfcsh /bin/pfksh /bin/pfsh /bin/sh /bin/tcsh /bin/zsh /sbin/jsh /sbin/pfsh /sbin/sh /usr/bin/bash /usr/bin/csh /usr/bin/jsh /usr/bin/ksh /usr/bin/ksh93 /usr/bin/pfcsh /usr/bin/pfksh /usr/bin/pfsh /usr/bin/sh /usr/bin/tcsh /usr/bin/zsh /usr/sfw/bin/zsh /usr/xpg4/bin/sh The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells. The setusershell() function rewinds the file or the list. The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells. RETURN VALUES
The getusershell() function returns a null pointer on EOF. BUGS
All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved. NOTES
Restricted shells should not be listed in /etc/shells. SunOS 5.11 1 Nov 2007 getusershell(3C)
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