$ ls
prevent_syscall_test.py   puts_test1.c   puts_test2.c

$ gcc puts_test1.c -o puts_test1
$ gcc puts_test2.c -o puts_test2
$ ./puts_test1
this is test.
d41d8cd98f00b204e9800998ecf8427e
program exited normally...

$ ./puts_test2
this is test.
9f900e2d14cbbff7536587baf3003f89
program exited normally...

$ python prevent_syscall_test.py ./puts_test1
this is test.
d41d8cd98f00b204e9800998ecf8427e
program exited normally...
[24074] exit() : exit process

$ python prevent_syscall_test.py ./puts_test2
this is test.
9f900e2d14cbbff7536587baf3003f89
IGNORE OPERATION!!
WARNING:root:Terminate <PtraceProcess #24078>
WARNING:root:waitpid() warning: Unknown PID 24078