-# usage: sync-accounts [-n] [-C<config-file>] [<host> ...]
-# options:
-# -n do not really do anything
-# -C alternative config file (default is /etc/sync-accounts)
-# -q display accounts synched, not synched, etc.
-# if no host(s) specified, does all
-# host(s) may not be specified with -q
-#