How to disable a specific command(s) for a certain user.

Please follow the below steps to disable a specific command(s) for a certain user.

# su - hari
$ which rm (Here rm command as an example)
$ mkdir ~/bin
$ ln -s /bin/* ~/bin/ (/bin is the PATH for rm)
$ rm -rf ~/bin/rm

Take the output of $PATH for this user

$ echo $PATH > MyPATH.txt
Edit this file and replace /bin with ~/bin

Login as root

$ su -
# cat /home/hari/MyPATH.txt >> /home/hari/.bashrc

Change the permission of /home/hari/.bashrc
# chmod 444 /home/hari/.bashrc
# chattr +i /home/hari/.bashrc

That's all.
But the user can reset the PATH variable anytime to overcome this.
Please comment with alternatives for this.

Comments

Anonymous said…

We can disable SET and ENV for this user in a same way as above.

October 20, 2008 at 10:37 PM

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