SUMMARY: /dev/null cannot create?

From: Reinaldo Penno Filho (
Date: Fri Mar 14 1997 - 11:17:08 CST

Very Thanks to

and many others

Original Question

Anyone Knows the reason for this?

Your request hp4-9 destined for hp4

The job title was: stdin
   submitted from: botafogo
               at: Fri Mar 14 08:51:18 1997

encountered an error while printing on printer hp4. Printing stopped with
an exit code of 1.

Reason for failure:

/etc/lp/interfaces/hp4: /dev/null: cannot create

Procmail and samba complain about the same thing

/dev/null: cannot create




The problem wasn't in /dev/null. It had the right permissions.
lrwxrwxrwx 1 root root 27 Jan 9 1997 null -> ../devices/pseudo/mm@0:null
The problem was in /devices/pseudo/mm@0:null
It has some crazy permission to a unique user 'lp' and group other
crw------- 1 lp other 13, 2 Oct 12 12:48 mm@0:null
And must be
crw-rw-rw- 1 root sys 13, 2 Oct 12 12:48 mm@0:null
Stefan <> really hit the spot and was very kind to send
me a step by step mail showing me the problem. Sometimes admintool
change the permissions when you create a printer. I've just created a
printer using admintool.

My opinion is that this must be a incredible bug. How can admintool change
the permissions in /devices/pseudo/mm@0:null when you create a printer
using admintool itself so that the printer you're trying to make work
don't work!!!
Very Thanks

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