Archives for July 2016

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Link: https://sskaje.me/2016/07/ssh-cli-client-add-new-tunnel-on-the-fly/

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 ~ 。

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.)

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 : https://sskaje.me/2016/07/ssh-cli-client-add-new-tunnel-on-the-fly/

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