[ -n "$CHROOT_OUTPUT" ] && echo " chroot target: $CHROOT_OUTPUT"
[ -n "$BUILD_OUTPUT" ] && echo " build target: $BUILD_OUTPUT"
[ -n "$ISO_OUTPUT" ] && echo " ISO target: $ISO_OUTPUT"
[ -n "$CHROOT_OUTPUT" ] && echo " chroot target: $CHROOT_OUTPUT"
[ -n "$BUILD_OUTPUT" ] && echo " build target: $BUILD_OUTPUT"
[ -n "$ISO_OUTPUT" ] && echo " ISO target: $ISO_OUTPUT"