I'm pretty rusty on my QNX4 but I think pidin is the closet QNX6 equivalent. Try "use pidin".

From: Allen Chen
Sent: Friday, February 22, 2013 10:48 PM
To: osmeta-core_os
Reply To: osmeta-core_os@community.qnx.com
Subject: sin cannot be executed on Neutrino 6.5.0


I installed Neutrino 6.5.0 on VMware workstation. To display system information, I use sin command. But it tells an 
error that /bin/sh cannot execute sin. Does the sin command not include in Neutrino 6.5.0?



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