Permissions, F-16 -

Bob Goodwin bobgoodwin at wildblue.net
Tue Feb 28 18:37:05 UTC 2012


On 28/02/12 10:24, Tony Placilla wrote:
>
> -----Original Message-----
> From: users-bounces at lists.fedoraproject.org [mailto:users-bounces at lists.fedoraproject.org] On Behalf Of Bob Goodwin
> Sent: Tuesday, February 28, 2012 10:12 AM
> To: Fedora List
> Subject: Permissions, F-16 -
>
>
>          Would someone explain the meaning of the permissions in the last
>          line below, especially the "+" ?
>
>              [root at box6 bobg]# ll /dev/bus/usb/001
>              total 0
>              crw-rw-r--. 1 root root 189, 0 Feb 28 03:08 001
>              crw-rw-r--+ 1 root root 189, 2 Feb 28 03:08 003
>
>          I understand read, write, and execute, and generally set them
>          with the values of 4, 2, and 1, but the --. and the --+ don't
>          seem to be covered in anything I've "googled." "d" for
>          directory, but "c" ?
>
>          Thanks,
>
>          Bob
>
>
> The c means it's a character special device (or file. ) Possibly a scanner connected via USB?
> The + means there are ACL's in affect for it
>
> --
> Tony Placilla<aplacilla at jhu.edu>

        Thanks for the information.

        With that and Google I can at least work around my scanner user
        problem.

        [root at box6 bobg]# setfacl -m u:bobg:rw- /dev/bus/usb/001/003

        I know that will change on reboot, etc. But it's a start.

        Bob





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