This is a very specific request, I am afraid. I am a non-root user at a CentOS Linux 7 machine. The admin team is normally very helpful but there is zero response for that case, unfortunately.
So I have no root power here and I would like to block/restrict some commands for myself: links, links2, lynx. Don't ask me why, please, treat this a weird challenge, perhaps?
Is there any way to achieve that being a non-root user?
You can create a directory in your home, create some files with the names of programs you want to restrict and prepend it to your $PATH. For example:
$ mkdir ~/bin Create ~/bin/links with the following contents:
#!/usr/bin/env sh echo you are not allowed to use links and make it executable. Prepend ~/bin to $PATH:
PATH=$HOME/bin:$PATH Now when you call links:
$ links you are not allowed to use links It won't be possible to bypass it with \ as it would be if alias was used:
$ \links you are not allowed to use links Note that links is still there in the $PATH:
$ type -a links links is /home/ja/bin/links links is /usr/bin/links And that nothing can stop you or other processes from calling the real links binary using an absolute path /usr/bin/links.
