On Saturday 15 May 2010 13:50:50 Christoph Anton Mitterer wrote: > On Sat, 2010-05-15 at 13:45 +0200, Holger Levsen wrote: > > This paragraph should be accompanied by something like: > > > > Instead of adding users to other users private groups (which has issues > > as explained above) it is recommend to create dedicated groups for these > > users for collaboration. > > Perhaps I'm completely stupid,... but why do we have UPGs then at all? > If we suggest users not to use them! > For those rare cases like "a user's wife/husband" which is fully > trusted? > > > Cheers, > Chris. > The purpose is to make a default umask of 002 possible, without security problems. This makes it easier to setup directories for collaboration with the segid bit set, as the group for newly created files will have write permissions, because of the umask being 002. Best regards, Robert
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