gsignal - General: Sends a signal to a process group
int signal );
Specifies the process group to which you want to send a
specified signal. Specifies the signal that you want to
send to the specified process group. You can specify any
of the signals defined in /usr/sys/include/sys/signal.h.
The gsignal routine sends a signal to a process group,
invoking psignal for each process that is a member of the
specified process group.
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