Bash:在 SSH 命令中使用 EXPORT

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时间:2020-09-18 08:04:52  来源:igfitidea点击:

Bash: using EXPORT inside SSH command

bashssh

提问by przno

When executing this command:

执行此命令时:

user@local:~ >ssh user@remote " export myvar=myvalue ; echo myvar=$myvar ; "

I get output:

我得到输出:

myvar=

When running directly on remote machine, I get the expected result:

当直接在远程机器上运行时,我得到了预期的结果:

user@remote:~ > export myvar=myvalue ; echo myvar=$myvar ;

Output:

输出:

myvar=myvalue

So how to set a variable inside ssh command?

那么如何在 ssh 命令中设置一个变量呢?

回答by glenn Hymanman

That's because you're using double quotes, so the variable is being expanded on your localmachine beforessh is even invoked. Use single quotes:

那是因为您使用了双引号,因此在调用 ssh之前,该变量已在本地计算机上展开。使用单引号:

ssh user@remote 'export myvar=myvalue ; echo myvar=$myvar'