如何将变量从 Jenkinsfile 传递到 shell 命令 [英] How to pass variables from Jenkinsfile to shell command

问题描述

我想使用我在 Jenkinsfile 脚本中使用的变量，然后将其值传递给 shell 脚本执行(作为环境变量或命令行参数).

I want to use a variable which I am using inside of my Jenkinsfile script, and then pass its value into a shell script execution (either as an environment variable or command line parameter).

但是下面的Jenkinsfile:

for (i in [ 'a', 'b', 'c' ]) {
    echo i
    sh 'echo "from shell i=$i"'
}

给出输出:

a
from shell i=
b
from shell i=
c
from shell i=

所需的输出类似于:

a
from shell i=a
b
from shell i=b
c
from shell i=c

知道如何将 i 的值传递给 shell scipt 吗?

Any idea how to pass the value of i to the shell scipt?

基于 Matt 的回答，我现在使用这个解决方案:

Based upon Matt's answer, I now use this solution:

for (i in [ 'a', 'b', 'c' ]) {
    echo i
    sh "i=${i}; " + 'echo "from shell i=$i"'
}

优点是我不需要在shell脚本中转​​义".

The advantage is, that I don't need to escape the " in the shell script.

推荐答案

您的代码使用的是文字字符串，因此您的 Jenkins 变量不会被插入到 shell 命令中.您需要使用 " 将变量插入到 sh 内的字符串中.' 只会传递一个文字字符串.所以我们需要这里有一些变化.

Your code is using a literal string and therefore your Jenkins variable will not be interpolated inside the shell command. You need to use " to interpolate your variable inside your strings inside the sh. ' will just pass a literal string. So we need to make a few changes here.

首先是将'改为":

for (i in [ 'a', 'b', 'c' ]) {
  echo i
  sh "echo "from shell i=$i""
}

不过，现在我们需要对里面的"进行转义:

However, now we need to escape the " on the inside:

for (i in [ 'a', 'b', 'c' ]) {
  echo i
  sh "echo "from shell i=$i""
}

此外，如果变量像您在上面所做的那样直接附加到字符串($i 到 i=)，我们需要用一些来关闭它花括号:

Additionally, if a variable is being appended directly to a string like you are doing above ($i onto i=), we need to close it off with some curly braces:

for (i in [ 'a', 'b', 'c' ]) {
  echo i
  sh "echo "from shell i=${i}""
}

这会让你得到你想要的行为.

That will get you the behavior you desire.

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