vi ctrl-s / ctrl-q

아무 생각없이 습관적으로 저장한다고 ctrl-s 하면 멈추는데

터미널을 잠그는 식?

일종의 software flow control이라고 하는데 그건 모르겠고

빠져나오는 방법은 ctrl-q

C-s enables terminal scroll lock. Which prevents your terminal from scrolling (By sending an "XOFF" signal to pause the output of the software).

C-q disables the scroll lock. Resuming terminal scrolling (By sending an "XON" signal to resume the output of the software).

[링크 : http://unix.stackexchange.com/questions/72086/ctrl-s-hang-terminal-emulator]

[링크 : https://kldp.org/node/51009]