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How are environment variables used in Jenkins pipeline?
First, you need to initialise your variables. In declarative pipeline syntax, you do this in an environment block in the pipeline definition (Jenkinsfile). You can do this: at the top level, to define environment variables that will be shared across all pipeline stages.
How do I view environment variables in Jenkins?
From the Jenkins web interface, go to Manage Jenkins > Manage Plugins and install the plugin.
- Go to your job Configure screen.
- Find Add build step in Build section and select Inject environment variables.
- Set the desired environment variable as VARIABLE_NAME=VALUE pattern.
Which command will create a new environment variable?
Summary:
| Command | Description |
|---|---|
| env | Displays all environment variables |
| VARIABLE_NAME= variable_value | Create a new variable |
| unset | Remove a variable |
| export Variable=value | To set value of an environment variable |
How to set environment variables in Jenkins build process?
EnvInject Plugin aka ( Environment Injector Plugin) gives you several options to set environment variables from Jenkins configuration. By selecting Inject environment variables to the build process you will get: and finally Evaluated Groovy script.
How to set Jenkins Pipeline environment variables in Groovy script?
The global variables are set via the Jenkins console and via the groovy script of a pipeline. The ways to set these global environment variables are: Log in to the Jenkins Server first. On the upper left side, you will find a dropdown menu on the right of Jenkins; Select the dropdown menu.
How to configure Jenkins to run a pipeline with Maven?
Provides Maven integration with Pipeline Plugin by using the withMaven step, which configures a maven environment to use within a pipeline job by calling sh mvn or bat mvn. And this blog post, Declarative Pipeline for Maven Projects, give a good example of configuring Jenkins to run a pipeline with Maven.
Do you use single quotes for variable name in Jenkins?
Correct! Here, bat “echo var: $VARIABLE_NAME”is interpreted as a Groovy GString and hence interpolated by Groovy and not the OS. Nevertheless, on Windows, %VARIABLE_NAME%should work with either single or double quotes.