Skip sudo password for one command only

[lucacerone]

Dear all,
on my laptop I often unmount portable devices issuing


sudo umount /path/to/device

from the terminal.

I'd like to know if there is a way to make sudo asking no password when my user (but no others) want to unmount certain specific devices.

In principle it should be possible because unmounting it from Nautilus asks for no password.

I guess that maybe modifying the fstab could avoid making me use sudo at all, but I don't know
how (so if you know, that would be useful as well).

I though wonder if there is a way to make only certain commands passwordless for specific users
using sudo.

Thanks a lot for your help,
Cheers, Luca

[Lars Noodén]

To do it with sudo, it should be something like this:



%lucacerone ALL=(ALL) NOPASSWD: /bin/umount /path/to/device


See the documentation for sudoers (http://manpages.ubuntu.com/manpages/oneiric/en/man5/sudoers.5.html) for details.

Or if you use fstab (http://manpages.ubuntu.com/manpages/oneiric/en/man5/fstab.5.html) you can add 'user' to the fourth field and it should allow the user to mount and unmount.