信号之sigaction函数
https://www.cnblogs.com/nufangrensheng/p/3515945.html
linux中fork()函数详解(原创!!实例讲解)
https://blog.csdn.net/jason314/article/details/5640969
在Linux中使用线程
https://blog.csdn.net/jiajun2001/article/details/12624923
C++ wait捕捉的信号处理WIFEXITED/WEXITSTATUS/WIFSIGNALED
https://www.cnblogs.com/delmory/p/3918811.html
Linux下getopt()函数的简单使用
https://www.cnblogs.com/qingergege/p/5914218.html
linux有名管道fifo,进程间通信
https://www.cnblogs.com/qingergege/p/9489682.html
Linux IO重定向的原理和实现
https://www.cnblogs.com/weidagang2046/p/io-redirection.html
Linux下串口收发通信
https://blog.csdn.net/yanhuan136675/article/details/82766466