来自ant的sshexec中bash脚本中的变量 [英] Variables in bash script in sshexec from ant

问题描述

我在 sshexec 任务中遇到变量问题.我的 build.xml ant 脚本如下所示:

I have a problem with variables in sshexec task. My build.xml ant script looks like:

<?xml version="1.0" encoding="UTF-8"?>
<project name="sshexecproject" basedir="." default="build">
<target name="build">
    <sshexec 
        host="192.168.2.106" 
        username="root" 
        password="xxx" 
        commandResource="${basedir}/to_run.sh" 
        trust="true"
        verbose="true"
        failonerror="true"
    />
</target>

在 to_run 脚本中，我有两个变量:

In the to_run script I have two variables:

#!/bin/bash

name="Pink Panther"
export name2="Panther Pink"

echo "Name: "
echo $name
echo "Name with export: "
echo $name2

如果我在终端上运行脚本，我会得到以下输出:

If I run the script on terminal i get the following output:

$ ./to_run.sh 
Name: 
Pink Panther
Name with export: 
Panther Pink

我们可以看到一切正常.但是如果我从 ant 启动 build.xml 脚本，我会得到以下输出:

We can see that all works fine. But if I start the build.xml script from ant i get the following output:

...
[sshexec] Authentication succeeded (password).
[sshexec] cmd : #!/bin/bash
[sshexec] cmd : 
[sshexec] cmd : name="Pink Panther"
[sshexec] cmd : export name2="Panther Pink"
[sshexec] cmd : 
[sshexec] cmd : echo "Name: "
[sshexec] Name: 
[sshexec] cmd : echo $name
[sshexec] 
[sshexec] cmd : echo "Name with export: "
[sshexec] Name with export: 
[sshexec] cmd : echo $name2
[sshexec] 
[sshexec] Disconnecting from ...

我们可以看到在远程服务器上这个脚本创建了一个空的回声.变量 name 和 name2 未填充.为什么?

We can see that on the remote server this script create an empty echo. The variable name and name2 is not filled. Why?

推荐答案

更改这一行:

commandResource="${basedir}/to_run.sh" 

到

command="${basedir}/to_run.sh" 

结果如下:

[sshexec] Authentication succeeded (password).
[sshexec] cmd : /data/tmp/anttest/to_run.sh
[sshexec] Name:
[sshexec] Pink Panther
[sshexec] Name with export:
[sshexec] Panther Pink

commandResource 获取包含命令列表的资源文件，并使用 bash -c $LINE 单独执行每一行，因此定义的任何变量仅在同一行上有效.command 在同一个 shell 中执行整个脚本.

commandResource takes a resource file with a list of commands and executes each line individually with bash -c $LINE so any variables defined are only valid on the same line. command executes the whole script in the same shell.

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