-export LFS_PKG_DIR="$(dirname $(dirname $(pwd)))/packages/stage4"
-export LFS_LOG_DIR=/var/log/hvlinux-install/stage4
+LFS_STAGE=stage4
+
+export LFS_PKG_DIR="$(dirname $(pwd))/packages/${LFS_STAGE}"
+export LFS_LOG_DIR=/var/log/hvlinux-install/${LFS_STAGE}