经常 Ctrl+R 按多了一下，然后就回不来了。

man 文档说 Ctrl+S 可以向前搜索，但是我怎么试都不行。

reverse-search-history (C-r)
       Search backward starting at the current line and moving `up' through the history as necessary.  This is an incremental search.
forward-search-history (C-s)
       Search forward starting at the current line and moving `down' through the history as necessary.  This is an incremental search.

亲测了一下 C-r 过了 直接 C-s 可以
不过我是 zshell

stty -ixon
关掉流控制

谢谢，竟然好了！我是用 macOS 自带的终端。