As a famous SSH client, securecrt is often used to log on to a remote server. Edit the text above, especially when you use VI to open two texts, and you need to switch between them, it is easy to get stuck and cannot accept any keyboard input. Very depressing. Every time I encountered this problem, I had to turn off the session and open another one. This time I met again, but I couldn't help it. I tried to solve it.
When you switch the text "Ctrl + W" Under VI, you can easily enter "Ctrl + S ". Just try a session and you will find that Ctrl + S is playing a strange role. If you enter this parameter, it will become stuck. After searching, we found that there was a reason:
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CTRL-S and CTRL-Q are called Flow-control characters. they represent an antiquated way of stopping and restarting the flow of output from one device to another (e.g ., from the computer to your terminal) that was useful when the speed of such output was low. they are rather obsolete in these days of high-speed networks. in fact, under the latter conditions, CTRL-S and CTRL-Q are basically a nuisance. the only thing you really need to know about them is that if your screen output becomes "stuck," then you may have hit CTRL-S by accident. type CTRL-Q to restart the output; any keys you may have hit in between will then take effect.
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CTRL + S is an old shell control key that can be restored after Ctrl + q is entered. Well, it's easy next time. This also tells us that we should solve the problem as soon as possible, instead of putting it on hold. One day it will become intolerable or increasingly serious.