update -a|<feedname(s)>: Update packages and lists of feeds in feeds.conf .
Options:
- -a : Update all feeds listed within feeds.conf. Otherwise the spezified feeds will be updated.
+ -a : Update all feeds listed within feeds.conf. Otherwise the specified feeds will be updated.
-i : Recreate the index only. No feed update from repository is performed.
clean: Remove downloaded/generated files.