Why can't I write this file?

[Joshua Lokken]

* Matthew Seaman <m.seaman at infracaninophile.co.uk> [2004-03-09 14:34]:
> On Mon, Mar 08, 2004 at 04:53:12PM -0500, Marty Landman wrote:
> > At 04:42 PM 3/8/2004, Dan Nelson wrote:
> > 
> > >What do you get if you run the "id" command?  Try logging out and back
> > >in.  Group memberships are checked at login time, so if you were added
> > >to the www group recently, your current shell may not know about it.
> > 
> > Would rehash fix that or do you have to log back in?
> 
> No -- rehash only applies to tcsh(1)'s lookup cache of all of the
> executables found on $PATH.

And so please excuse my erroneous response.

  
> > It's kind of strange but true how you could be logged onto the same account 
> > on two different ttys or ssh sessions and have different sets of gids or 
> > commands available to you. <just thinking out loud>
> 
> Yes, quite.  Your login credentials are established when you login to
> the system and only then -- that's when the limits of what you're
> authorized to do are set, which includes amongst other things which
> groups you're a member of.  So you have to log out and back in again
> to pick up any changes to /etc/master.passwd or /etc/group.
> 
> 	Cheers,
> 
> 	Matthew
> 
> -- 
> Dr Matthew J Seaman MA, D.Phil.                       26 The Paddocks
>                                                       Savill Way
> PGP: http://www.infracaninophile.co.uk/pgpkey         Marlow
> Tel: +44 1628 476614                                  Bucks., SL7 1TH UK


Joshua