op

Run a command as someone else

Syntax:

op command

Runs on:

QNX Neutrino

Options:

None.

Description:

The op utility was designed as an easy way to run commands as root.

CAUTION:
This utility is a security hole. You have to log in as root and do the following in order to make it do anything:
chmod +s /usr/bin/op

You should use su instead.