Putty -- Ctrl S恢复

 使用Putty连接Linux Server的时候，偶尔不小心按了Ctrl + S（在用vim编辑的时候，经常会发生），整个会话就没有响应了。要恢复过来很容易，只要按Ctrl + Q就好了。

 

"This is software flow control - left over from the days of serial connections. Control+S sends XOFF and Control+Q sends XON and together they make XON/XOFF, or "software," flow control. Hardware flow control is known as RTS/CTS and involves switching the signal on a couple of the pins connected to the serial port."