# ./th2
In main: creating thread 0
In main: creating thread 1
In main: creating thread 2
In main: creating thread 3
In main: creating thread 4
Hello World! It's me, child in thread #4!



Good Bay World! It's me, thread #0!
Good Bay World! It's me, thread #1!
Good Bay World! It's me, thread #2!
Good Bay World! It's me, thread #3!
Good Bay World! It's me, thread #4!

[program exited ]

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Good bay World! It's me, child in thread #4!

#

[ but childrens stil exists in memory ]

USER    PID %CPU %MEM  VSZ   RSS TTY   STAT STARTED    TIME COMMAND
root    427  0.0  0.2 2784   500 ttyp0 I     9:59PM 0:00.00 ./th2
root    476  0.0  0.2 2784   520 ttyp0 I     9:59PM 0:00.00 ./th2
root    497  0.0  0.2 2784   496 ttyp0 I     9:59PM 0:00.00 ./th2
root    688  0.0  0.2 2784   496 ttyp0 I     9:59PM 0:00.00 ./th2