Exclusive lock on /dev/null

[Guy Harris]

>I had the same problem when we upgraded to Sun OS 4.0.3 - I worked around
>it by creating a device for each printer which has the same major and
>minor device number as /dev/null,

The same issue came up on the "sun-managers" list; one of the
correspondents (not a relative, as far as I know :-)) claims there is an
even easier solution:

X-From: Michael Harris - NYC SE <uunet!east.sun.com!michael.harris>
X-Subject: Re:  Lock on /dev/null
...

Make the lp entries in printcap null instead of /dev/null or dummy files
like this:

ps|lp|lw|postscript|PostScript:\
        :lp=:\
        :rm=lprhost:\
        :rp=lp:\
        :sd=/var/spool/ps:\
        :lf=/var/spool/ps/ps-log:

It works fine.

HTH
mh