调用系统函数向进程发信号core

#include <unistd.h>
int main(void)
{ 
    while(1); 
    return 0;
}

# ./a.out &

[2] 1669
# kill -SIGSEGV 1669
# 回来
[2]-  Segmentation fault      (core dumped) ./a.out

#$