Re: [Expectperl-discuss] Occasional Pty problems with Expect on FreeBSD. Please help me!

[Dave S. <kin...@ya...>]

I am running FreeBSD. I've also used the MAKEDEV
command to make as many ptys on my machine as it can
support, which is supposedly 256. I know that I am not
using that many though.

I am not using Expect purely for interaction with the
ssh login prompt. I also need it to send commands to
programs that run within the ssh shell, and to read
back the output of those commands. If you know of
another way to do this (besides the already mentioned
Net::SSH), I'd be grateful for the info.

Thanks,
Dave

--- Roland Giersig <RGi...@cp...> wrote:
> > 1) "Cannot open a pty".
> >    This comes from a failure of the pty_allocate
> > function, in the "new" subroutine of Pty.pm. My
> Pty.pm
> > is version 1.02. I cannot find the "pty_allocate"
> > subroutine in any .pm or .pl file on my system, so
> I
> > don't know why it is failing sometimes.
> 
> Looks like you ran out of ptys on your system. This
> can happen if you 
> have a lot of simultanious connections to spawned
> commands (or a lot of 
> windows open). You didn't say what OS you are
> running on, you may want 
> to look into /dev to see how pty* there are. Or into
> /dev/ptmx/. Go ask 
> a local guru.
> 
> BTW, the pty_allocate() is written in C and in an
> .XS module...
> 
> 
> > 2) "Error: could not connect pty as controlling
> > terminal!"
> 
> This may be related to 1) and also is very
> system-dependent. Maybe an 
> OS-upgrade is in order?
> 
> Oh, and I think somebody already pointed out the SSH
> module? Be sure to 
> read the entry in the Expect FAQ about automating
> ssh. You should NOT be 
> using Expect purely to enter passwords for login,
> there are better 
> mechanisms for that...
> 
> Hope this helps,
> 
> Roland
> --
> RGi...@cp...
> 
> 
> 
>
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