I would like to be able to run a command, passing in parameters to bash or similar, such that this command is not allowed to write to a particular path, overriding the user's other privs.

Eg:

```
root> /bin/bash -protect /folder/to/protect mycommand.sh

```

In this example, the root user can obviously do what it wants, but while I test a new script I'm writing, I would like to protect a folder, as if the folder was read only for that user.

Is there a way to do this without adding a new user and adjusting that user's privs accordingly? It doesn't have to be in bash by the way, I don't mind the approach - as long as I can protect folders without adding a new user I don't mind!