DRY, codestyle, z installation, misc

scripts/install-z.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+Z_GIT_PATH="https://github.com/rupa/z.git"
+Z_BIN_PATH="$XDG_BIN_HOME/z"
+
+if [ ! -d "$Z_BIN_PATH" ]; then
+  git clone "$Z_GIT_PATH" "$Z_BIN_PATH"
+else
+  echo "z ($Z_BIN_PATH/) already installed"
+fi