See perforce hooks scripts example here https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggers/perforce/ 

Jira Cloud: https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerscloud/perforce/

See perforce hooks scripts example here https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggers/subversion

Jira Cloud: https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerscloud/subversion/

See git hooks scripts example here https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggers/git . 

Jira Cloud: https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerscloud/git/

See this script example here https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggers/joblinks

See Gerrit hook scripts example here https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggers/gerrit

Jira Cloud: https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerscloud/gerrit/

See Collaborator hook scripts example here https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggers/coco

Jira Cloud: https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerscloud/coco/