display backup.py usage if no action was specified
authorPhilipp Gesang <philipp.gesang@intra2net.com>
Thu, 2 Mar 2017 13:36:43 +0000 (14:36 +0100)
committerPhilipp Gesang <philipp.gesang@intra2net.com>
Thu, 2 Mar 2017 13:37:09 +0000 (14:37 +0100)
commitd3dd37a7a461ea2f0b6e8b62e8bdf482ddadaf4c
tree00d826f14dc387c82846b63d2274e3854b4eb5ae
parent36a40984e9363f63f263e522956cf65a350bd468
display backup.py usage if no action was specified

Getting no feedback if the invocation had no effect is rather
unseemly. Print the help message instead.
backup.py