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QNX BACKGROUND INFORMATION
LICENSING
D - 8
I-E96-107-2N
®
You will want to use the “rtc” utility with the -1 (“el”) option:
rtc -l hw
This invocation of “rtc” assumes that the real-time clock was
set to local time. Note that when you use local time in the
real-time clock, you will have to manually change the value in
the real-time clock when you switch to an from daylight sav-
ings time in locales where it is used.
NOTE: If the time in your hardware clock is incorrect (perhaps the
battery has been replaced), you should set the system time using
the “date” utility, then set the real-time clock using the “rtc” utility with
the
-s option. For details, see the documentation for these utilities in
the
QNX4 Utilities Reference.
If you are booting the
over the network
If you boot over the network, the booting machine will inherit
UTC time and time zone environment variable from the node it
boots from. Therefore, you do not need to put this information
in your system initialization file.
LICENSING
Operating System Licensing
QNX must be licensed for each computer it runs on. This is
true whether you are using 10 stand-alone machines or 10
networked machines.
In a network, each machine is referred to as a “node” and each
node is assigned a “logical” node ID. Logical node IDs range
from 1 to the number of nodes in the network. For example, a
network licensed for three nodes would support logical node
IDs one, two, and three. You set the size of the network by run-
ning the “license” utility (see the section
To verify licensing, you can use the “ls” command. The follow-
ing would indicate a single-node QNX license:
ls /etc/licenses
qnx000178n001
Product
Number of Nodes
Serial Number