I want to make a html page which have a submit button , anyone who are accessing my page over the network and hit the submit button his system going to reboot.

I have code a html page which has action="reboot.php" which upon submitting it ran the reboot.php script...in reboot.php i have the code as follows
<?php
exec("sudo /sbin/shutdown");
?>

but it dosent work for me??? please help how to design such page

PHP is executed on the server. The client only receives the text output by the script. Also, your web server probably runs under a username that doesn't have sudo privileges.
Kevin Barry

so how do i make a page that will shudown my clients pc,whenever they press the submit button of my page.....please help

well, you COULD edit the sudoer's file to allow the 'user' the web server runs as sudo privileges to reboot the machine without a password, but this is horrible in practice because it opens a serious security hole in your system.

you probably would be better off installing Webmin on the system in question, which provides not only a means of rebooting the server, but also of managing the server remotely, AND it provides an authentication mechanism, and can be run via SSL.

There's a reason it's not an easy thing to do. A button that could shut down one's computer via a web page wouldn't have to be labeled "CAUTION! THIS WILL SHUT DOWN YOUR COMPUTER!" It could literally say anything. What if my computer shut down when I pressed "Post Quick Reply" on this page? If anyone with a web page could arbitrarily shut down my machine I wouldn't ever use the web. You should probably just post a statement that says, "Please shut down your computer if it's an appropriate time to do so."
Kevin Barry

I think OP is asking for "frieza goes to my web page and clicks a button, then frieza's machine shuts down and I laugh."
Kevin Barry

well that's also impossible for a reason imagine the potential for malicious use of such an ability.

yes you are right,but tell me is there any way to do so,and what is webmin,please tell me if there is any other way other than webmin to do so?

webmin is a program that allows remote management/adminsitration of a Linux/*NIX machine (creation/deletion of user accounts, file shares, configuration of server processes, administration of the bootup/shutdown process, software updates, cron jobs, etc...), via a convenient web based interface.
note however the interface affects the REMOTE machine running webmin, not the local machine running the browser.
you can also reboot or shutdown the machine remotely via the webmin interface.

yes there are probably other softwares that do this, but webmin is the only one i can think of at the moment.

i am using red hat enterprise linux 6,is webmin available for free,if yes tell me the link please.

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http://prdownloads.sourceforge.net/w...n-1.560.tar.gz (tarball, most flexible)
then you just open a terminal

$ tar -xjf webmin-1.560.tar.gz
$ cd webmin-1.560
$ su -c ./setup.sh
then follow the instructions.

magicalshashank31, this thread is pointless and borderline malicious. While I don't think you'll be successful at accomplishing your goal of shutting down the machine of your helpless visitors, you'll have to continue looking for someone to help you with this task somewhere else besides LQ.

Closing the thread.