创建虚拟串口 socat -d -d pty,raw,echo=0 pty,raw,echo=0 输出 2024/08/06 21:44:19 socat[20808] N PTY is /dev/pts/4 2024/08/06 21:44:19 socat[20808] N PTY is /dev/pts/5 2024/08/06 21:44:19 socat[20808] N starting data transfer loop with FDs [5,5] and [7,7] 其中/dev/pts/4和/dev/pts/5就是两个虚拟串口,都可以实现IO