$ msg/pid ${srcdir:=.}/msg/pid_p.xml ${srcdir:=.}/msg/pid_d.xml 0 "--log=root.fmt:[%10.6r]%e(%i:%P@%h)%e%m%n"
> [  0.000000] (1:sendpid@toto) Sending pid of "1".
> [  0.000000] (2:sendpid@toto) Sending pid of "2".
> [  0.000000] (3:sendpid@toto) Sending pid of "3".
> [  0.001082] (4:killall@toto) Killing process "1".
> [  0.001082] (1:sendpid@toto) Send of pid "1" done.
> [  0.001082] (1:sendpid@toto) Process "1" killed.
> [  0.002165] (2:sendpid@toto) Send of pid "2" done.
> [  0.002165] (4:killall@toto) Killing process "2".
> [  0.002165] (2:sendpid@toto) Process "2" killed.
> [  0.003247] (3:sendpid@toto) Send of pid "3" done.
> [  0.003247] (4:killall@toto) Killing process "3".
> [  0.003247] (3:sendpid@toto) Process "3" killed.

$ msg/pid ${srcdir:=.}/msg/pid_p.xml ${srcdir:=.}/msg/pid_d.xml 2 "--log=root.fmt:[%10.6r]%e(%i:%P@%h)%e%m%n"
> [  0.000000] (2:sendpid@toto) Sending pid of "2".
> [  0.000000] (3:sendpid@toto) Sending pid of "3".
> [  0.000000] (4:sendpid@toto) Sending pid of "4".
> [  0.001082] (5:killall@toto) Killing process "2".
> [  0.001082] (2:sendpid@toto) Send of pid "2" done.
> [  0.001082] (2:sendpid@toto) Process "2" killed.
> [  0.002165] (3:sendpid@toto) Send of pid "3" done.
> [  0.002165] (5:killall@toto) Killing process "3".
> [  0.002165] (3:sendpid@toto) Process "3" killed.
> [  0.003247] (4:sendpid@toto) Send of pid "4" done.
> [  0.003247] (5:killall@toto) Killing process "4".
> [  0.003247] (4:sendpid@toto) Process "4" killed.
