+if [[ $INVOCATION_ID ]]; then
+ if [[ -e /b/bash_unpublished/source-state ]]; then
+ source /b/bash_unpublished/source-state
+ fi
+ if [[ $MAIL_HOST && $MAIL_HOST != $HOSTNAME ]]; then
+ echo "$0: exiting early: running under systemd as MAIL_HOST"
+ exit 0
+ fi
+fi
+