blocks|key|1313178|text|尝试：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1313179|NOW=`date+%2B"%25F"`|code-block|syntax|javascript|1313180|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try:

<pre><code>NOW=`date +"%F"`
</code></pre>

blocks|key|1313230|text|您的脚本在发送之前正在本地主机上执行替换。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1313231|将第一行更改为：|1313232|ssh+-T+tunneluser@111.222.333.444+<<'EOI'|code-block|syntax|javascript|1313233|这将导致在您的远程主机上发送并解释原始脚本。|1313234|如果您希望使用混合命令(例如，如果您希望在本地主机上执行date命令，则应保留ssh行不变，并将单个命令引起来)：|offset|length|style|CODE|1313235|ssh+-T+tunneluser@111.222.333.444+<<EOI

#+Execute+the+date+command+on+the+local+machine.++The+assignment+still
#+happens+on+the+remote+machine
NOW=$(date+%2B"%25F")

#+Quote+your+$+so+that+the+replacement+happens+on+the+remote+machine
echo+\$NOW|1313236|entityMap^0|0|0|0|0|S|4|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|Y|8|@$M|Z|N|10|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|F|7|11|8|@]|9|@]|A|$G|H]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

Your script is doing substitution on the local host before being sent over.

Change your first line to:

<pre><code>ssh -T tunneluser@111.222.333.444 &lt;&lt;'EOI'
</code></pre>

This will cause the raw script to get sent over and interpreted on your remote host.

If you wanted a mix (so for example, if you wanted the <code>date</code> command executed on your local host, you should leave ssh line unchanged and quote the individual command):

<pre><code>ssh -T tunneluser@111.222.333.444 &lt;&lt;EOI

# Execute the date command on the local machine. The assignment still
# happens on the remote machine
NOW=$(date +"%F")

# Quote your $ so that the replacement happens on the remote machine
echo \$NOW
</code></pre>

blocks|key|1313267|text|本地主机上的外壳程序正在对$NOW和$BACKUP进行变量替换，因为"EOI“没有转义。替换|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1313268|+ssh+tunneluser@111.222.333.444+<<EOI|code-block|syntax|javascript|1313269|使用|1313270|+ssh+tunneluser@111.222.333.444+<<\EOI|1313271|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

The shell on the local host is doing variable substitution on $NOW and $BACKUP because the "EOI" isn't escaped. Replace

<pre><code> ssh tunneluser@111.222.333.444 &lt;&lt;EOI
</code></pre>

with

<pre><code> ssh tunneluser@111.222.333.444 &lt;&lt;\EOI
</code></pre>

blocks|key|1098310|text|这些变量正在本地计算机上的脚本中进行计算。你需要用转义的美元符号来代替美元符号。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1098311|#!/bin/bash
ssh+-T+tunneluser@111.222.333.444+<<EOI

#+Fix+"TERM+environment+variable+undefined"+error.
TERM=dumb
export+TERM

#+Store+todays+date.
NOW=\$(date+%2B"%25F")
echo+\$NOW

#+Store+backup+path.
BACKUP="/backup/\$NOW"
[+!+-d+\$BACKUP+]+&&+mkdir+-p+\${BACKUP}
echo+\$BACKUP

exit
EOI|code-block|syntax|javascript|1098312|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The variables are being evaluated in the script on the local machine. You need to subsitute the dollar signs with escaped dollar signs.

<pre><code>#!/bin/bash
ssh -T tunneluser@111.222.333.444 &lt;&lt;EOI

# Fix "TERM environment variable undefined" error.
TERM=dumb
export TERM

# Store todays date.
NOW=\$(date +"%F")
echo \$NOW

# Store backup path.
BACKUP="/backup/\$NOW"
[ ! -d \$BACKUP ] &amp;&amp; mkdir -p \${BACKUP}
echo \$BACKUP

exit
EOI
</code></pre>

I'm trying to write a Bash script that will SSH into a machine and create a directory. The long-term goal is a bit more complicated, but for now I'm starting simple. However, as simple as it is, I can't quite seem to get it. Here's my code:

<pre><code>#!/bin/bash
ssh -T tunneluser@111.222.333.444 &lt;&lt;EOI

# Fix "TERM environment variable undefined" error.
TERM=dumb
export TERM

# Store todays date.
NOW=$(date +"%F")
echo $NOW

# Store backup path.
BACKUP="/backup/$NOW"
[ ! -d $BACKUP ] &amp;&amp; mkdir -p ${BACKUP}
echo $BACKUP

exit
EOI
</code></pre>

It runs without any explicit errors. However, the echoed $NOW and $BACKUP variables appear empty, and the /backup directory is not created. How do I fix this?

Running a Bash script over ssh

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试编写一个Bash脚本，它将通过SSH连接到一台计算机并创建一个目录。长期目标有点复杂，但现在我从简单开始。然而，尽管它很简单，但我似乎不太明白。下面是我的代码：#!/bin/bashssh -T tunneluser@111.222.333.444 <<EOI# Fix "TERM environment v...

问在ssh上运行Bash脚本
EN

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