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Pty communications manager (QNX Neutrino)

Note: You must be root to start this driver.


devc-pty [options] &

Runs on:



-C size
Specify the size of the canonical buffer in bytes (default 256).
-I size
Size of input buffer in bytes (default 256).
-n numptys
Create numptys ptys (default 8).
-O size
Size of output buffer in bytes (default 3 × 512).
-o nodaemon
Don't call procmgr_daemon() to make the driver run in the background. Use this option if you need to know when the devc-pty device terminates.


The devc-pty manager is a small pty manager for QNX Neutrino. It can support up to 176 ptys, a limit imposed by UNIX naming conventions for ptys.


Start devc-pty with 32 ptys:

devc-pty -n 32 &