diff --git a/zsh.d/50_cdtmp.zsh b/zsh.d/50_cdtmp.zsh
new file mode 100644
index 0000000..ea59079
--- /dev/null
+++ b/zsh.d/50_cdtmp.zsh
@@ -0,0 +1,18 @@
+# vim: ft=zsh
+
+function cdtmp {
+   if [ -z "$MY_TEMP_DIR" ]; then
+      newtmp
+   fi
+   cd "$MY_TEMP_DIR"
+}
+
+function newtmp {
+   export MY_TEMP_DIR="$(mktemp -d)"
+   echo "new tmp dir in $MY_TEMP_DIR"
+}
+
+function cdnewtmp {
+    newtmp
+    cdtmp
+}