以前用PuTTY的时候，可以在会话过程中新开tunnel，而不需要断开原有连接重连。
后来命令行下，想着这么复杂的操作，PuTTY也是因为有GUI才好配置，所以一直当openssh命令行客户端不支持此功能。
直到看到ssh支持Escape Char，才发现原来可以这么搞。
ssh默认的escape char是 ~ 。
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root@dev-21:~# ~? Supported escape sequences: ~. - terminate connection (and any multiplexed sessions) ~B - send a BREAK to the remote system ~C - open a command line ~R - request rekey ~V/v - decrease/increase verbosity (LogLevel) ~^Z - suspend ssh ~# - list forwarded connections ~& - background ssh (when waiting for connections to terminate) ~? - this message ~~ - send the escape character by typing it twice (Note that escapes are only recognized immediately after newline.) |
这些命令，大都是按着SHIFT不放的。。。
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SSH命令行不重连新加tunnel by @sskaje: https://sskaje.me/2016/07/ssh-cli-client-add-new-tunnel-on-the-fly/