+ -b basedir place where to put the tarball [$basedir]
+ -c write config only
+ -d dir place where to build the chroot [${builddir:-$basedir}]
+ -f overwrite config and target tarball
+ -g GROUPS groups that should have access to the schroot [$groupuser]
+ -k KEYRING use an alternate keyring [$keyring]
+ -p PERS use a different sbuild personality [$personality]
+ -r GROUPS groups that should have root in the schroot [$grouproot]
+ -s use sbuild compatible naming scheme
+ -u Ubuntu target
+ -h this help