/usr/share/doc/cloud-init/examples/upstart-cloud-config.txt is in cloud-init 0.7.6~bzr976-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | #upstart-job
description "My test job"
start on cloud-config
console output
task
script
echo "====BEGIN======="
echo "HELLO WORLD: $UPSTART_JOB"
echo "=====END========"
end script
|