Linux 如何通过 ssh 连接到远程主机并立即执行命令
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/9816769/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
how to ssh into a remote host and execute a command immediately
提问by hey mike
If i've already put public key to remote host. So there is no password input problem.
如果我已经将公钥放在远程主机上。所以不存在密码输入问题。
I want to login a remote machine and execute screen -rimmediately. Is there a way to achieve this ?
我想登录远程机器并screen -r立即执行。有没有办法实现这一目标？
For example:
例如：
ssh example.com ; screen -r
But this is wrong since screen -rwon't send to remote host.
但这是错误的，因为screen -r不会发送到远程主机。
回答by Perception
Remove the semicolon from your example:
从您的示例中删除分号：
ssh example.com "screen -r"
Your not going to get much bandwidth for that particular command though, as it needs an attached terminal in order to execute successfully.
但是，您不会为该特定命令获得太多带宽，因为它需要一个附加的终端才能成功执行。
* EDIT 1 *
* 编辑 1 *
To run multiple commands, just string them together separated by semi-colon:
要运行多个命令，只需将它们串在一起，以分号分隔：
ssh example.com "screen -r; ls -al; ps -elfc"
* EDIT 2 *
* 编辑 2 *
Still not entirely sure what you are trying to accomplish (was screen -rjust an example, or are you really trying to just chain a bunch of commands together?). In any case, I am amending my answer to cover more possibilities:
仍然不完全确定你想要完成什么（screen -r只是一个例子，或者你真的想把一堆命令链接在一起？）。无论如何，我正在修改我的答案以涵盖更多可能性：
To chain random commands together:
将随机命令链接在一起：
ssh example.com "ps -elfc; ls"
To run some random commands after running screen:
在运行 screen 后运行一些随机命令：
ssh -t example.com "screen -r; ls"
To specifically run screen and send commands to it:
要专门运行 screen 并向其发送命令：
ssh -t example.com "screen -r -X ls"
回答by Corbin
http://unixhelp.ed.ac.uk/CGI/man-cgi?ssh+1
http://unixhelp.ed.ac.uk/CGI/man-cgi?ssh+1
ssh [-1246AaCfgkMNnqsTtVvXxY] [-b bind_address] [-c cipher_spec] [-D [bind_address:]port] [-e escape_char] [-F configfile] [-i identity_file] [-L [bind_address:]port:host:hostport] [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port] [-R [bind_address:]port:host:hostport] [-S ctl_path] [-w tunnel:tunnel] [user@]hostname [command]
ssh [-1246AaCfgkMNnqsTtVvXxY] [-b bind_address] [-c cipher_spec] [-D [bind_address:]port] [-e escape_char] [-F configfile] [-i identity_file] [-L [bind_address:]port:host:主机端口] [-l 登录名] [-m mac_spec] [-O ctl_cmd] [-o 选项] [-p 端口] [-R [bind_address:]port:host:hostport] [-S ctl_path] [-w 隧道:隧道] [用户@] 主机名 [命令]
Command is the last parameter. ; tells the local shell that ssh and screen are two different commands, not that one is a command and the other is an argument.
命令是最后一个参数。; 告诉本地 shell ssh 和 screen 是两个不同的命令，不是一个是命令，另一个是参数。
Not sure if it will work or not since screen is an odd program to do it with, but ssh blah.com 'screen -r'is the correct syntax.
不确定它是否会工作，因为 screen 是一个奇怪的程序，但ssh blah.com 'screen -r'是正确的语法。
回答by Pavan Manjunath
This will work
这将工作
ssh root@something 'ls -l'
回答by Mark Fraser
Try using single quotes:
尝试使用单引号：
ssh example.com 'screen -r'
回答by salva
Just put the command you want to run after the host name:
只需将要运行的命令放在主机名之后：
ssh example.com screen -r
回答by amcnabb
When you run a command on a remote host, by default ssh will not allocate a pseudoterminal. If you run an interactive program like screen on a remote host, you must have a pseudoterminal. The -toption makes this happen. Try:
在远程主机上运行命令时，默认情况下 ssh 不会分配伪终端。如果你在远程主机上运行像 screen 这样的交互式程序，你必须有一个伪终端。该-t选项使这发生。尝试：
ssh -t example.com "screen -r"
回答by mgabriel
You can also echo your command to the remote host:
您还可以将您的命令回显到远程主机：
echo "command" | ssh user@host
回答by Brijesh Singh
try this one...
试试这个...
ssh -XY -t user@remote_IP 'ssh -XY -t user@remoteToRemote_IP'
you can continue with command screen -ror any other at remoteToRemote_IP machine.
您可以screen -r在 remoteToRemote_IP 机器上继续使用命令或任何其他命令。
回答by Benjamin Atkin
All you need to do is pass the -tflag.
您需要做的就是传递-t旗帜。
This:
这个：
ssh -t v tmux attach -t o
runs tmux with the specified options (-t omeans to connect to the session named o)
使用指定的选项运行 tmux（-t o意味着连接到名为的会话o）
If I run it without the -tI get an error:
如果我没有运行它，-t我会收到一个错误：
? ~ ssh v tmux attach -t o
open terminal failed: not a terminal
The quotes are optional. This also works, but involves typing two extra keystrokes:
引号是可选的。这也有效，但需要输入两个额外的按键：
ssh -t v 'tmux attach -t o'
By the way my ssh host is called vbecause I added an entry to ~/.ssh/config. The vstands for vagrant, and it goes to a user I created instead of the vagrantuser that ships by default.
顺便说一下，我的 ssh 主机被调用v是因为我在~/.ssh/config. 的v代表vagrant，并且它去我创建了一个用户，而不是vagrant用户附带默认。
