在另一个 tmux 会话中打开 tmux 会话时如何发送命令? [英] How to send commands when opening a tmux session inside another tmux session?

问题描述

典型情况可能是:

$ tmux
  [0] $ ssh example.com
      $ tmux attach
        [0] $ 

我打开一个 tmux 会话，然后通过 ssh 连接到服务器并附加到现有的 tmux 会话.在这一点上，我在另一个里面有一个 tmux 会话.如何向内部 tmux 会话发送命令?

I open a tmux session, then ssh in to a server and attach to an existing tmux session. At this point I have one tmux session inside another. How do I send commands to the inner tmux session?

注意:两个 tmux 会话具有相同的键绑定.

Note: Both tmux sessions have the same key bindings.

推荐答案

send-prefix 命令可用于将您的前缀击键发送到(在其中运行的进程)活动窗格.默认情况下，前缀是 Cb 并且 Cb 绑定到 send-prefix(所以点击它两次会发送一个 Cb 到活动窗格).这正是我们需要访问内部 tmux 实例的绑定.

The send-prefix command can be used to send your prefix keystroke to (the process running in) the active pane. By default, the prefix is C-b and C-b is bound to send-prefix (so that hitting it twice sends a single C-b to the active pane). This is just what we need to access the bindings of the inner tmux instance.

第一个 C-b 被外部"tmux 实例捕获作为其前缀键.第二个被外部"tmux 实例捕获并触发其C-b 绑定(send-prefix).这会将 C-b 发送到外部实例的活动窗格.在此窗格中运行的进程是(最终通过 ssh 实例)内部"tmux 实例.它捕获 C-b 作为其前缀键.现在，您的下一次击键将通过外部 tmux 实例并被内部实例捕获以触发绑定.

The first C-b is captured by the "outer" tmux instance as its prefix key. The second one is captured by the "outer" tmux instance and triggers its C-b binding (send-prefix). This sends a C-b to the outer instance’s active pane. The process running in this pane is (ultimately, through an ssh instance) the "inner" tmux instance. It captures the C-b as its prefix key. Now your next keystroke will be passed through the outer tmux instance and captured by the inner one to trigger a binding.

要在 tmux 的二级实例中触发 c 绑定(new-window)，您需要输入 CbCb c.对于 tmux 的第三级实例，您可以输入 C-b C-b C-b C-b c.

To trigger the c binding (new-window) in a second-level instance of tmux, you would type C-b C-b c. For a third-level instance of tmux you would type C-b C-b C-b C-b c.

如果您经常处理 tmux 的多层，这种每个级别的加倍可能会很烦人.如果您可以节省一些其他密钥，您可以进行无前缀绑定以使事情(可能)更容易输入:

This doubling for each level can be annoying if you are commonly dealing with multiple layers of tmux. If you can spare some other key, you could make a non-prefixed binding to make things (possibly) easier to type:

bind-key -n C-\ send-prefix
bind-key -n C-^ send-prefix \; send-prefix

在二级tmux中创建新窗口:C-\c
在三级tmux中创建新窗口:C-^ c(或C-\ C-\ c)

Create new window in second-level tmux: C-\ c
Create new window in third-level tmux: C-^ c (or C-\ C-\ c)

如果您想要(轻松)发送到较低级别的 tmux 实例的 tmux 命令数量有限，则可以改用 send-keys 创建一些特定的绑定(可能只是在你的顶级 tmux 实例中):

If you have a limited number of tmux commands that you want to (easily) send to the lower-level tmux instances, you might instead use send-keys to create some specific bindings (possibly just in your top-level tmux instance):

bind-key C-c  send-keys C-b c
bind-key C    send-keys C-b C-b c

在二级tmux中创建新窗口:C-b C-c
在第三级 tmux 中创建新窗口:C-b C

Create new window in second-level tmux: C-b C-c
Create new window in third-level tmux: C-b C

这篇关于在另一个 tmux 会话中打开 tmux 会话时如何发送命令?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！