[CentOS] Changing permissions on files that only exist during USB operation

Sean O'Connell oconnell at soe.ucsd.edu
Sun Sep 4 03:43:52 UTC 2005

On Sun, 2005-09-04 at 12:30 +0900, Dave Gutteridge wrote:
> >If you look at the above - it already is usable (in fact owned) by the
> >user dave.
> >  
> >
> Well, if you say so, I believe you.
> The reason I think I don't have the correct permissions settings is 
> because on the following web page, it says that the error I get is 
> because the permissions are wrong. If I already have the "correct" 
> permissions settings, and I still get this error, then I'm at a loss to 
> diagnose the problem.
> http://www.brandonhutchinson.com/Running_JPilot_as_a_non-privileged_user.html
> >make sure that 'jpilot' or any other program that you wish to use to
> >sync your Palm, uses /dev/pilot
> >  
> >
> In the JPilot preferences page, it has a field for entering in "Serial 
> Port". In that field I have "/dev/pilot".
> There does not seem to be an option or way to specify whether or not the 
> connection is USB, but I assume if it's going to /dev/pilot then it 
> should be looking in the right place...?

It looks like /dev/pilot is owned by you, but (iirc) the palms/visors
and such use /dev/pilot and one other USB channel to do the sync. Based
on your earlier comments, it look like it might require you to also
own /dev/ttyUSB0. One thing that you might be able to do is use


Add the following entries (below the comments)

# device classes -- these are shell-style globs
<pilot> /dev/ttyUSB*

# permission definitions
<console>  0660 <pilot>     0660 root.uucp

Then log off and back in. This should set things up so that the person
logged in on the machine console (X or virtual console) will own these


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