diff --git a/.README.md b/.README.md
index 380273b..aab4d11 100644
--- a/.README.md
+++ b/.README.md
@@ -355,6 +355,12 @@ Command|Description
 `bootstrap_grub`|Install grub theme. Requires root.
 `bootstrap_ffmpeg`|Install ffmpeg in flatpak to make `~/app/bin/ffmpeg` work.
 
+## Cd.
+
+Command|Description
+---|---
+`cdd <DIR>`|Cd back to previous directory by name.
+
 ## Checksum.
 
 Command|Description
diff --git a/.config/bash/module/cd.sh b/.config/bash/module/cd.sh
new file mode 100644
index 0000000..a48d531
--- /dev/null
+++ b/.config/bash/module/cd.sh
@@ -0,0 +1,28 @@
+# CD (back) to directory.
+# Usage: cdd <DIR>
+cdd()
+{
+  local target="${1}"
+  local array
+  local result
+  IFS='/' read -r -a array <<< "${PWD}"
+  array=("${array[@]:1}")
+
+  # Make search case-insensitive.
+  shopt -s nocasematch
+
+  # Find desired dir.
+  for dir in "${array[@]}"; do
+    result="${result}/${dir}"
+    [[ "${dir}" =~ "${target}" ]] && break
+  done
+
+  # Clean-up???
+  shopt -n nocasematch
+
+  # Say where we're going.
+  echo "${result}"
+
+  # Go there!
+  cd "${result}"
+}