Of course, Linux could do what Solaris did decades ago and define the directory order in which `rm -rf /` works to start with `pwd` - and thus fail immediately. That would fix that problem completely.
In the example above, the command would be `rm -rf /` without the variable present, and the shell would expand / to all the folders in /. So it's not a direct call to `rm -rf /`, you would need to handle the shell expansion of /* as well?
