Reference Links: https://www.cnblogs.com/puresoul/p/4828913.html
First, see what environment variables Jenkins
1. Create a job any
2, increasing the build steps: Execute shell or Execute Windows batch command
3, click on the bottom of the input box "Available Environment Variables"
4, you can see the following variables are available:
| variable name | Explanation |
| BUILD_NUMBER | The current build number, such as "153" |
| BUILD_ID | The current build ID, identical to BUILD_NUMBER for builds created in 1.597+, but a YYYY-MM-DD_hh-mm-ss timestamp for older builds |
| BUILD_DISPLAY_NAME | The display name of the current build, which is something like "#153" by default. |
| JOB_NAME | Name of the project of this build, such as "foo" or "foo/bar". (To strip off folder paths from a Bourne shell script, try: ${JOB_NAME##*/}) |
| BUILD_TAG | String of "jenkins-${JOB_NAME}-${BUILD_NUMBER}". Convenient to put into a resource file, a jar file, etc for easier identification. |
| EXECUTOR_NUMBER | The unique number that identifies the current executor (among executors of the same machine) that’s carrying out this build. This is the number you see in the "build executor status", except that the number starts from 0, not 1. |
| NODE_NAME | Name of the slave if the build is on a slave, or "master" if run on master |
| NODE_LABELS | Whitespace-separated list of labels that the node is assigned. |
| WORKSPACE | The absolute path of the directory assigned to the build as a workspace. |
| JENKINS_HOME | The absolute path of the directory assigned on the master node for Jenkins to store data. |
| JENKINS_URL | Full URL of Jenkins, like http://server:port/jenkins/ (note: only available if Jenkins URL set in system configuration) |
| BUILD_URL | Full URL of this build, like http://server:port/jenkins/job/foo/15/ (Jenkins URL must be set) |
| SVN_REVISION | Subversion revision number that's currently checked out to the workspace, such as "12345" |
| SVN_URL | Subversion URL that's currently checked out to the workspace. |
| JOB_URL | Full URL of this job, like http://server:port/jenkins/job/foo/ (Jenkins URL must be set) |
Second, the use of built-in variables Jenkins
1, in the Execute shell or Execute Windows batch command using text box, using the method: variable name%% below
2, in conjunction with the Ant, in build.xml file:
1, add the following lines of code 4: <property environment = "env" />
2, using the method: $ {env.WORKSPACE}
1 <?xml version="1.0" encoding="UTF-8"?>
2
3 <project name="ant-test" default="run" basedir=".">
4 <property environment="env"/>
5
6 <target name="clean">
7 <mkdir dir="${env.WORKSPACE}/results/${env.BUILD_ID}" />
8 </target>
9
10 </project>