[英]Using parameters within a shell command in Jenkinsfile for Jenkins pipeline
I want to use defined parameters in Jenkinsfile
in several shell commands, but I get an exception.我想在多个 shell 命令中使用
Jenkinsfile
中定义的参数,但出现异常。 In my example I want to execute a simple docker command.在我的示例中,我想执行一个简单的 docker 命令。 The parameter defines the path to docker executable.
该参数定义了 docker 可执行文件的路径。
This is my very short Jenkinsfile
:这是我很短的
Jenkinsfile
:
pipeline {
agent any
parameters {
string(defaultValue: '/Applications/Docker.app/Contents/Resources/bin/docker', description: '', name: 'docker')
}
stages {
stage('Test') {
steps {
sh 'sudo ${params.docker} ps -a'
}
}
}
}
And I get the following exception:我得到以下异常:
[e2e-web-tests_master-U4G4QJHPUACAEACYSISPVBCMQBR2LS5EZRVEKG47I2XHRI54NCCQ] Running shell script
/Users/Shared/Jenkins/Home/workspace/e2e-web-tests_master-U4G4QJHPUACAEACYSISPVBCMQBR2LS5EZRVEKG47I2XHRI54NCCQ@tmp/durable-e394f175/script.sh: line 2: ${params.docker}: bad substitution
When I change the Jenkinsfile
without using the paramter inside the shell command it passes successfully:当我在不使用 shell 命令中的参数的情况下更改
Jenkinsfile
,它成功通过:
pipeline {
agent any
parameters {
string(defaultValue: '/Applications/Docker.app/Contents/Resources/bin/docker', description: '', name: 'docker')
}
stages {
stage('Test') {
steps {
sh 'sudo /Applications/Docker.app/Contents/Resources/bin/docker ps -a'
}
}
}
}
So, how can I use parameters inside a shell command in Jenkinsfile?那么,如何在 Jenkinsfile 的 shell 命令中使用参数? I tried
string
and text
as parameter types.我尝试将
string
和text
作为参数类型。
The issue you have is that single quotes are a standard java String.您遇到的问题是单引号是标准的 Java 字符串。
Double quotes are a templatable String, which will either return a GString if it is templated, or else a standard Java String.双引号是一个可模板化的字符串,如果它是模板化的,它将返回一个 GString,否则将返回一个标准的 Java 字符串。
So it you use double quotes:所以你使用双引号:
stages {
stage('Test') {
steps {
sh "sudo ${params.docker} ps -a"
}
}
}
then params.docker will replace the ${params.docker} inside the 'sh' script in the pipeline.然后 params.docker 将替换管道中“sh”脚本内的 ${params.docker}。
If you want to put "
inside the "sudo ${params.docker} ps -a"
it doesn't work like bash (which is confusing) you use java style escaping, so "sudo \\"${params.docker}\\" ps -a"
如果你想把
"
放在"sudo ${params.docker} ps -a"
它不像 bash 那样工作(这令人困惑)你使用 java 风格的转义,所以"sudo \\"${params.docker}\\" ps -a"
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