Documenting ${JOB_NAME##*/} trick.

core/src/main/resources/jenkins/model/CoreEnvironmentContributor/buildEnv.properties

 BUILD_NUMBER.blurb=The current build number, such as "153"
 BUILD_ID.blurb=The current build id, such as "2005-08-22_23-59-59" (YYYY-MM-DD_hh-mm-ss)
 BUILD_DISPLAY_NAME.blurb=The display name of the current build, which is something like "#153" by default.
-JOB_NAME.blurb=Name of the project of this build, such as "foo" or "foo/bar"
+JOB_NAME.blurb=Name of the project of this build, such as "foo" or "foo/bar". (To strip off folder paths from a Bourne shell script, try: <tt>$'{'JOB_NAME##*/}</tt>)
 BUILD_TAG.blurb=String of "jenkins-<i>$'{'JOB_NAME}</i>-<i>$'{'BUILD_NUMBER}</i>". Convenient to put into a resource file, a jar file, etc for easier identification.
 EXECUTOR_NUMBER.blurb=\
   The unique number that identifies the current executor \