bash 运行 ssh 并立即执行命令
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Run ssh and immediately execute command
提问by cadlac
I'm trying to find UNIX or bash command to run a command after connecting to an ssh server. For example:
我试图在连接到 ssh 服务器后找到 UNIX 或 bash 命令来运行命令。例如：
ssh name@ip "tmux list-sessions"
The above code works, it lists the sessions, but it then immediately disconnects. Putting it in the sshrc on the server side works, but I need to be able to type it in client side. I want to be able to run a command, it logs in, opens up the window, then runs the command I've set. Ive tried
上面的代码有效，它列出了会话，但随后立即断开连接。将它放在服务器端的 sshrc 中可以工作，但我需要能够在客户端输入它。我希望能够运行一个命令，它登录，打开窗口，然后运行我设置的命令。我试过了
[command] | ssh name@ip
ssh name@ip [command]
ssh name@ip "[command]"
ssh -t name@ip [command]
回答by Barmar
ssh -t 'command; bash -l'
will execute the command and then start up a login shell when it completes. For example:
将执行命令，然后在完成时启动登录 shell。例如：
ssh -t [email protected] 'cd /some/path; bash -l'
回答by gypaetus
You can use the LocalCommandcommand-line option if the PermitLocalCommandoption is enabled:
LocalCommand如果PermitLocalCommand启用了该选项，您可以使用命令行选项：
ssh username@hostname -o LocalCommand="tmux list-sessions"
For more details about the available options, see the ssh_configman page.
有关可用选项的更多详细信息，请参阅ssh_config手册页。
回答by Keith Thompson
This isn't quitewhat you're looking for, but I've found it useful in similar circumstances.
这不是很你在寻找什么，但我发现它在类似情况下非常有用。
I recently added the following to my $HOME/.bashrc(something similar should be possible with shells other than bash):
我最近将以下内容添加到我的$HOME/.bashrc（使用 bash 以外的 shell 应该可以实现类似的东西）：
if [ -f $HOME/.add-screen-to-history ] ; then
history -s 'screen -dr'
fi
I keep a screensession running on one particular machine, and I've had problems with sshconnections to that machine being dropped, requiring me to re-run screen -drevery time I reconnect.
我让一个screen会话在一台特定的机器上运行，但我遇到了与ssh那台机器的连接断开的问题，screen -dr每次重新连接时都需要我重新运行。
With that addition, and after creating that (empty) file in my home directory, I automatically have the screen -drcommand in my history when my shell starts. After reconnecting, I can just type Control-PEnterand I'm back in my screen session -- or I can ignore it. It's flexible, but not quiteautomatic, and in your case it's easier than typing tmux list-sessions.
有了这个添加，并在我的主目录中创建了那个（空）文件之后，screen -dr当我的 shell 启动时，我的历史记录中会自动拥有该命令。重新连接后，我只需输入即可Control-PEnter返回屏幕会话——或者我可以忽略它。它很灵活，但不是很自动，在您的情况下，它比键入tmux list-sessions.
You might want to make the history -scommand unconditional.
您可能希望使history -s命令无条件。
This does require updating your $HOME/.bashrcon each of the target systems, which might or might not make it unsuitable for your purposes.
这确实需要$HOME/.bashrc在每个目标系统上更新您的系统，这可能会或可能不会使其不适合您的目的。
