diff --git a/misc/install-morpheus b/misc/install-morpheus
index d98a211..9963236 100755
--- a/misc/install-morpheus
+++ b/misc/install-morpheus
@@ -2,24 +2,29 @@
 #
 # you need pkgtools from http://git.2f30.org/pkgtools/
 
-mkdir -p root/var/pkg
-mkdir -p pkgs
-searchpkg '\.tgz$' | xargs wget -P pkgs
-installpkg -p root pkgs/busybox#1.22.1.pkg.tgz
-installpkg -p root pkgs/curl#7.36.0.pkg.tgz
-installpkg -p root pkgs/e2fsprogs#1.42.9.pkg.tgz
-installpkg -p root pkgs/extlinux#6.02.pkg.tgz
-installpkg -p root pkgs/file#5.17.pkg.tgz
-installpkg -p root pkgs/fs.pkg.tgz
-installpkg -p root pkgs/hbase.pkg.tgz
-installpkg -p root pkgs/ii.pkg.tgz
-installpkg -p root pkgs/linux#3.10.32.pkg.tgz
-installpkg -p root pkgs/mksh#R47.pkg.tgz
-installpkg -p root pkgs/pkgtools.pkg.tgz
-installpkg -p root pkgs/sbase.pkg.tgz
-installpkg -p root pkgs/sdhcp.pkg.tgz
-installpkg -p root pkgs/sinit.pkg.tgz
-installpkg -p root pkgs/smdev.pkg.tgz
-installpkg -p root pkgs/tmux#1.9a.pkg.tgz
-installpkg -p root pkgs/ubase.pkg.tgz
-installpkg -p root pkgs/vim#7.4.pkg.tgz
+root="root"
+pkgdir="pkgs"
+# prepare root.
+mkdir -p "$root/var/pkg"
+mkdir -p "$pkgdir"
+# fetch packages.
+searchpkg '\.tgz$' | xargs wget -P "$pkgdir"
+# install
+installpkg -p "$root" "$pkgdir/busybox#1.22.1.pkg.tgz"
+installpkg -p "$root" "$pkgdir/curl#7.36.0.pkg.tgz"
+installpkg -p "$root" "$pkgdir/e2fsprogs#1.42.9.pkg.tgz"
+installpkg -p "$root" "$pkgdir/extlinux#6.02.pkg.tgz"
+installpkg -p "$root" "$pkgdir/file#5.17.pkg.tgz"
+installpkg -p "$root" "$pkgdir/fs.pkg.tgz"
+installpkg -p "$root" "$pkgdir/hbase.pkg.tgz"
+installpkg -p "$root" "$pkgdir/ii.pkg.tgz"
+installpkg -p "$root" "$pkgdir/linux#3.10.32.pkg.tgz"
+installpkg -p "$root" "$pkgdir/mksh#R47.pkg.tgz"
+installpkg -p "$root" "$pkgdir/pkgtools.pkg.tgz"
+installpkg -p "$root" "$pkgdir/sbase.pkg.tgz"
+installpkg -p "$root" "$pkgdir/sdhcp.pkg.tgz"
+installpkg -p "$root" "$pkgdir/sinit.pkg.tgz"
+installpkg -p "$root" "$pkgdir/smdev.pkg.tgz"
+installpkg -p "$root" "$pkgdir/tmux#1.9a.pkg.tgz"
+installpkg -p "$root" "$pkgdir/ubase.pkg.tgz"
+installpkg -p "$root" "$pkgdir/vim#7.4.pkg.tgz"