<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.0.9"> </HEAD> <BODY> I wrote a script this morning to keep the students in my classes from playing games/chess/web browsing during my classes (I don't want to uninstall games, and that doesn't stop the browsing). Basically, the script is an infinite loop (always wanted to have a "while (true)" loop) that reads 2 variables from a file that you specify on the command line (ctrl-c stops it). It just loops and does a ps list for each user and picks the pids of the programs you don't want them to run, and kills them... here's the contents from my 1st period file I use: #1st_period.reap #1st Period - no mozilla, no chess, no Maelstrom REAP_USERS="cfraser afuller mandrews rladd cpawley" REAP_PROGS="mozilla-bin gnuchess Maelstrom" So I run ./class_reaper.sh 1st_period.reap You have to run it as root at the moment... DO NOT RUN THIS USING SUDO!!!!!!!!!!! As you can imagine, a malicious user who has access to run it could terminate any users programs, as well as gdm, root, etc!!!! If someone wants to make it SUDO safe (ie: protect root, etc... or users under a UID # range), and not kill users within specific groups (ie: Faculty).... you are quite welcome to. I've thought about making it interactive... ie: as students finish an assignment, I can release them while not having to terminate the script and reload the new text file. <TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%"> <TR> <TD> <TABLE> <TR> <TD> <IMG SRC="http://www.hhprep.org/images/4decade-sig.jpg" ALIGN="bottom" BORDER="0"> </TD> <TD> Henry Burroughs Technology Director Hilton Head Preparatory School www.hhprep.org hburroughs@hhprep.org </TD> </TR> </TABLE> </TD> </TR> </TABLE> </BODY> </HTML>