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 > -- Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world. Albert Einstein -- 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
