[ -z "$FCDISTRO" ] && FCDISTRO=$DEFAULT_FCDISTRO
[ -z "$PLDISTRO" ] && PLDISTRO=$DEFAULT_PLDISTRO
[ -z "$PERSONALITY" ] && PERSONALITY=$DEFAULT_PERSONALITY
[ -z "$FCDISTRO" ] && FCDISTRO=$DEFAULT_FCDISTRO
[ -z "$PLDISTRO" ] && PLDISTRO=$DEFAULT_PLDISTRO
[ -z "$PERSONALITY" ] && PERSONALITY=$DEFAULT_PERSONALITY