bash 如何通过 ssh 将 echo 的输出重定向到文件
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how to redirect output of echo over ssh to a file
提问by Hamid Reza Moradi
I'm trying to redirect content of a variable to a file through ssh. like:
我正在尝试通过 ssh 将变量的内容重定向到文件。喜欢：
ssh $MachineIP echo $CM_Config > $mName/CM_CONFIG
where $CM_Configis a local variable in my host containing multiple line, and $mName/CM_CONFIGis located in $MachineIPhow should I redirect local variable to the remote file assuming my ssh configurations are correct.
Thanks in advance
$CM_Config我的主机中包含多行的本地变量在哪里，并且$mName/CM_CONFIG位于$MachineIP假设我的 ssh 配置正确的情况下我应该如何将本地变量重定向到远程文件。提前致谢
回答by Olaf Dietsche
You must quote the whole command with double quotes
您必须用双引号引用整个命令
ssh $MachineIP "echo $CM_Config > $mName/CM_CONFIG"
This allows the variables to be replaced by the local shell and the redirection done at the remote host.
这允许变量被本地 shell 替换并在远程主机上完成重定向。
回答by Hamid Reza Moradi
In my case the problem solved with this command:
在我的情况下，此命令解决了问题：
ssh $MachineIP " echo \"$CM_Config\" > \"$mName/CM_CONFIG\" "
In fact without \" enclosing my variable, my problem didn't solved. Maybe it is because that the content of these variables are somehow like bash command and are in multiple lines.
事实上，如果没有 \" 包围我的变量，我的问题并没有解决。也许是因为这些变量的内容有点像 bash 命令，并且是多行的。
