cannot find a free pseudo tty

Hello all,
I am working on QNX4.25 and sometimes when I open a new terminal, it
says “cannot find a free pseudo tty”. Can anyone please explain to me why
this happens and how do I solve the problem.
Thanks,
KT

Tray Karra <tkarra@ces.clemson.edu> wrote:

Hello all,
I am working on QNX4.25 and sometimes when I open a new terminal, it
says “cannot find a free pseudo tty”. Can anyone please explain to me why
this happens and how do I solve the problem.

The driver for the pseudo ttys is Dev.pty, it takes a -n option to
describe how many you need. Normally it will have been started by
a system initialization file called something like:
/etc/config/sysinit
/etc/config/sysinit.1

With on Dev.pty you can have up to 16 pseudo tty devices, you can start
multiple ones – check the docs on Dev.pty for details on how to do this.

-David

QNX Training Services
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