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Date: Wed, 13 Dec 2006 10:42:46 -0700
From: Eric Brunson <brunson@brunson.com>
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Subject: Increasing ptys/ttys beyond 128
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I've done some searching on the web, but everything I've come across is 
either out of date and says to recompile the kernel, or else says that 
after 5.1 the devfs does it automatically.  I don't think that's the case.

I'm running 6.1 and I need more than the [pt]ty[p-sP-S] devices that 
will auto-clone in devfs.

I've tried adding lines like the following to /etc/default/devfs.rules:

add path 'ptyt*' unhide
add path 'ttyt*' unhide

But that doesn't do the trick.  The syntax "unhide" implies to me that 
the [p-sP-S] nodes exist but but are hidden by the hide_all ruleset.

What do I have to do to allow the creation of more ptys?

Thanks,
e.