Problem : CTRL+S in Putty
Over the years, we all have habit of using CTRL+S every few minutes during working on a document, because we all had too much work lost from stupid errors; In the Windows world, CTRL+S is used as the Save you work. But, this habit will be a problem on working in the Linux world. By accident while inside a terminal window (in PUTTY) we press CTRL+S, this accidental keystroke meant we had reconnect to my Linux server, kill whatever program we were running, and then start it again. But here is solution : CTRL+S actually does XOFF, which means the terminal will accept key strokes but won’t show the output of anything. It will appear as if your terminal is dead when it’s really just waiting to be turned back on. The fix? Simply press CTRL+Q to turn flow-control on (XON) . If you pressed a whole bunch of keys before pressing CTRL+Q, you’ll see the output from those keystrokes.