Umm... couldn't you simply not give them write permission to the .xinitrc files? Make a user and group called "unpriveleged", set the owner of the .xinitrc to unpriveleged:unpriveleged, and set the permissions to 611.

Jaime wrote:
I work in a publish school in the US and am considering LTSP for our younger students. The problem is, a significant number of them have paperwork from their parents that forbid them from using the Internet while allowing them to use computers in general. The way that we do this on our Macintosh systems is to sort students into two "workgroups." One of them doesn't allow the user to launch certain programs, e.g. web browsers, FTP clients, etc. while the other one does.

I know that Unix doesn't usually have anything like this. I figured that my best bet was to set their shells to pdmenu and then manually install .xinitrc files in each account. I could probably script this, but a savvy user could still use any text editor (or word processor with a Save As command) to change this.

Does anyone have any suggestions? I need to be sure that some students can run Firefox while others can't. Any pointers are appreciated. For background purposes, I've been running Unix and Unix-like systems (Linux, FreeBSD, NetBSD, etc.) in various ways for almost 9 years.

                            Thanks in advance,
                            Jaime



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