You cannot "easily" port the binary to other os/distro's, there can be a library / processor or gcc issue.
Shell script can easily be ported to others distros ! And moreover, a script is always preferred than a binary HTH -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Anshul Sent: Friday, February 18, 2005 1:07 AM To: [email protected] Subject: Re: [ilug-cal] Login expiration Well, whats wrong with writing a simple suid C program and calling it from etc/profile with the user id as an argument. Its simple, straight froward and does exactly what is wanted in this situation. Anshul On Fri, 18 Feb 2005 00:15:08 +0530, Rajiv Lodha <[EMAIL PROTECTED]> wrote: > Hello, > > You just need to schedule a script to be executed at a certain interval of > time (say 1 min). > > The logic - > > Using "w" (or who) you can get login name, time logged in. > $w > > Grab the output, and in a for loop, use grep to take the username from this > and then try this - (Don't forget to check the username for root !) > > You have the time logged in and userid, check the system time ... and if the > difference is one hour .. continue the steps below or move to next userid > > $ps -u "userid" > > it will list the process id(s) for all processes which belongs to the > particular user. > > Pid TTY TIME CMD > 1730 tty1 00:00:00 X > 6610 tty1 00:00:00 bash > > Here "X" is the GUI Interface for the particular user > And bash is the normal CUI. > > Now use kill -9 to terminate these process > $kill -9 1730 > $kill -9 6610 > > Try these commands on the shell and then and see what happens. > > Warning - Check the man docs, first learn how to disable cron jobs and then > use cron. > > PS - Please don't use this to annoy your colleagues! ;-) > > HTH > > Regards, > Rajiv > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of linuxprosun > Sent: Thursday, February 17, 2005 5:13 PM > To: [email protected] > Subject: Re: [ilug-cal] Login expiration > > No, as far I know, cron don't bother about the login done or not, and I > want to logout the person just after the 1hr, after (s)he logs in, not on > around the clock basis. I used cron and found that if user logs in last > minute of the cron schedule, then (s)he logs out just after 1min, from > his/her log on. Thanks for your reply, please give me more suggestions. > > waiting > prosun > > On Mon, 14 Feb 2005 08:08:50 +0530, Rajiv Lodha <[EMAIL PROTECTED]> > wrote: > > > instead of "C" program, you can write a unix shell script ... make a > > smart use of CRON(TAB), we used to do this with our fellow students at > > our institue. > > > > but instead of 1 hr ... we did the same for 1 min ;-) > > > > He He He. > > > > rajiv > > > > > > > > > > On Mon, 14 Feb 2005 05:16:29 +0530, Anshul <[EMAIL PROTECTED]> > > wrote: > >> On Sun, 13 Feb 2005 13:09:21 +0530, Manas Laha > >> <[EMAIL PROTECTED]> wrote: > >> > > >> > Abhijit Banerjee wrote: > >> > > >> > >prosun try this > >> > >in bashrc add at the end > >> > > > >> > >sleep 3600 > >> > >logout > >> > > > >> > > > >> > Won't work, unfortunately! All this will do is block the terminal for > >> > one hour and then log the user out. Not quite what Prosun desires. > >> > > >> > Also, any modifications made to the user's .bashrc or .bash_profile > >> can > >> > be undone by the user any time in the one hour available to him. So, > >> the > >> > modifications should be made to the system-wide /etc/profile file. > >> This > >> > file, along with the user's own .bash_profile and .bashrc are read in > >> > during every login. > >> > > >> > Here's an outline of what _probably_ has to be added in /etc/profile > >> in > >> > order to achieve what Prosun desires: > >> > > >> > 1. The process-id of the user's login shell has to be obtained. > >> > 2. A shell script has to be started in the background and given this > >> > process-id. This background process will sleep for 1 hr (Abhijit's > >> sleep > >> > 3600) and, on waking up, will kill the process whose process-id it > >> knows. > >> > > >> > Even then, clever users may be able to get around this. > >> > > >> > Would others like to share their ideas too? > >> > > >> > - Manas Laha > >> > > >> > >> Maybe one should write a small C program to do 2 and make it suid 755 > >> and call it from etc profile. That will be beyond the users > >> manipulation. > >> > >> etc profile can easily find the id using 'id -u' > >> > >> (A more professional design for a web kiosk operation could use a > >> modified code of xscreensaver and call it from etc profile in the > >> above way to lock the screen instead of logging a user out, so that > >> you could remotely authorize and record a second hour! ) > >> > >> Anshul > >> > >> -- > >> I'm too lazy to compose a creative sig, so i stole someone else's. > >> > >> -- > >> To unsubscribe, send mail to [EMAIL PROTECTED] with the body > >> "unsubscribe ilug-cal" and an empty subject line. > >> FAQ: http://www.ilug-cal.org/node.php?id=3 > >> > > > > > > -- > Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ > > -- > To unsubscribe, send mail to [EMAIL PROTECTED] with the body > "unsubscribe ilug-cal" and an empty subject line. > FAQ: http://www.ilug-cal.org/node.php?id=3 > > -- > To unsubscribe, send mail to [EMAIL PROTECTED] with the body > "unsubscribe ilug-cal" and an empty subject line. > FAQ: http://www.ilug-cal.org/node.php?id=3 > -- I'm too lazy to compose a creative sig, so i stole someone else's. -- To unsubscribe, send mail to [EMAIL PROTECTED] with the body "unsubscribe ilug-cal" and an empty subject line. FAQ: http://www.ilug-cal.org/node.php?id=3 -- To unsubscribe, send mail to [EMAIL PROTECTED] with the body "unsubscribe ilug-cal" and an empty subject line. FAQ: http://www.ilug-cal.org/node.php?id=3
