Re: Problem attempting to use xorriso
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On Thu, Nov 10, 2016 at 04:53:47AM -0600, Richard Owlett wrote:
> On 11/9/2016 5:16 PM, Lisi Reisz wrote:
> >On Sunday 06 November 2016 16:47:00 Richard Owlett wrote:
> >>[snip]
> >>Based on responses to previous posts titled "Trivial script will
> >>NOT execute" and "Permissions for an entire PARTITION" I have
> >>multiple problems understanding Linux file systems generally.
> >
> >I imagine you have seen this lot - especially the top three??
> >https://www.google.co.uk/search?q=basic+debian+file+system&oq=basic+debian+file+system&aqs=chrome..69i57.7617j0j7&sourceid=chrome&ie=UTF-8
> >
> >Lisi
>
> Yes, but not in the context of a sub-project from last few days.
> I suspect what I aiming at might look like - the groups and
> permission bits set at time partition created, thus avoiding games
> with /etc/fstab .
>
> richard@jessie-defaults:~$
> richard@jessie-defaults:~$ ls -l /dev/sd*
> brw-rw---- 1 root disk 8, 0 Nov 10 03:35 /dev/sda
> brw-rw---- 1 root owl 8, 1 Nov 10 03:35 /dev/sda1
> brw-rw-r-- 1 root owl 8, 2 Nov 10 03:35 /dev/sda2
> brw-rw---- 1 root disk 8, 3 Nov 10 03:35 /dev/sda3
> brw-rw---- 1 root disk 8, 5 Nov 10 03:35 /dev/sda5
> brw-rw---- 1 root disk 8, 16 Nov 10 04:43 /dev/sdb
> br--rw-r-- 1 root owl 8, 17 Nov 10 04:43 /dev/sdb1
Note that with this setting, "you" can thrash whatever is in /dev/sda
through /dev/sdb (write access). Besides "everyone" can peek into
/dev/sda2 and /dev/sdb1.
And by "you" I'm talking about any program running on your behalf,
i.e. an executable attachment to this mail which your mail reader
might let through, or a LaTeX class c&p'ed off the Interwebs.
This is not to scare you: just to help you tune your awareness
towards such things.
> >>If retirement isn't for learning, what use is it.
:-)
regards
- -- tomás
"I'm a signature virus. Go ahead and copy me into your signature"
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