UNIX for Advanced & Expert Users

Can some one suggest me the way to disable " rm -rf * " or " rm -rf / " command execution permanently from the server. Any suggestion will be very much helpful .

I assume you're concerned over this so that people can't mess up your system. Actually I don't believe it's possible to do what you want for 2 reasons:
1) rm -rf *: this command deletes all files / subdirectories that are located inside your current working directory. If the right permissions are set, a normal user will not be able to delete anything over which he doesn't have write permissions. On the other hand, I (as a normal user) should be allowed to delete the files and the directories that I own.
2) rm -rf /: this command deletes *everything*, beginning at the root directory down to the last file / directory in the filesystem tree. Again, if you're not root, you won't be allowed to do it. Now, if you're root and still do that, you are either suicidal or up for a good punch in the face .

So, rest assured that with the right permissions policy (everything comes down to it) your system should be safe.

If you have any further questions, do not hesitate to let us know .

What about rm -rf ../* when you're one dir up from root? What about /bin/rm -rf ../* ? What about cd / ; rm -r * ? There are thousands of possible permutations.

What everyone is saying:

1. when your system permissions are correct, and the average user is not logged in as root, things will be fine.

2. You cannot anticipate every command that could delete entire filesystems/ & directory trees. You have to use both permissions, and prevent privileged access.

Thanks for the suggestions guys,

But the question is still half answered . The application which is running on the server has to be accessed or do any code change in it requires root permissions ,so every of the workstation with Cent OS being accessed is given root permissions and most of the programmers are non linux users who are causing this. Atleast it will be good if i can make a message echo "Please verify your command ".

Split the environment. Have the code changes happen on a development server and implement some kind of checkin/transfer to bring the code to the production server.

Hope that could have been in my hand .Its already been developed and now only thing i can do as an admin is to stop the users to stop them from executing the deadly commands