The following variables are available to shell and batch build steps:

JOB_DISPLAY_URL

URL that will redirect to a Job in a preferred user interface

RUN_DISPLAY_URL

URL that will redirect to a Build in a preferred user interface

RUN_ARTIFACTS_DISPLAY_URL

URL that will redirect to Artifacts of a Build in a preferred user interface

RUN_CHANGES_DISPLAY_URL

URL that will redirect to Changelog of a Build in a preferred user interface

RUN_TESTS_DISPLAY_URL

URL that will redirect to Test Results of a Build in a preferred user interface

CI

Statically set to the string "true" to indicate a "continuous integration" execution environment.

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".

JOB_BASE_NAME

Short Name of the project of this build stripping off folder paths, such as "foo" for "bar/foo".

BUILD_TAG

String of "jenkins-${JOB_NAME}-${BUILD_NUMBER}". All forward slashes ("/") in the JOB_NAME are replaced with dashes ("-"). 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 agent if the build is on an agent, or "built-in" if run on the built-in node (or "master" until Jenkins 2.306).

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.

WORKSPACE_TMP

A temporary directory near the workspace that will not be browsable and will not interfere with SCM checkouts. May not initially exist, so be sure to create the directory as needed (e.g., mkdir -p on Linux). Not defined when the regular workspace is a drive root.

JENKINS_HOME

The absolute path of the directory assigned on the controller file system 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).

JOB_URL

Full URL of this job, like http://server:port/jenkins/job/foo/ (Jenkins URL must be set).