adds `cdx` function which locates directory of an executable in your path and changes to it

modules/utility/README.md

@@ -124,6 +124,7 @@ Functions
 ### Files and Directories
 
   - `cdls` changes to a directory and lists its contents.
+  - `cdx` locates directory of an executable in your path and changes to it.
   - `dut` displays the grand total disk usage using human readable units.
   - `find-exec` finds files and executes a command on them.
   - `mkdcd` makes a directory and changes to it.
@@ -153,6 +154,7 @@ Authors
   - [Robby Russell](https://github.com/robbyrussell)
   - [Suraj N. Kurapati](https://github.com/sunaku)
   - [Sorin Ionescu](https://github.com/sorin-ionescu)
+  - [Wil Moore III](https://github.com/wilmoore)
 
 [1]: https://github.com/sorin-ionescu/prezto/issues
 

modules/utility/init.zsh

@@ -185,3 +185,24 @@ function psu {
   ps -U "${1:-$USER}" -o 'pid,%cpu,%mem,command' "${(@)argv[2,-1]}"
 }
 
+# locates directory of an executable in your path and changes to it.
+function cdx {
+  local exe="$1"
+  local fqe="$(command -v $exe 2>/dev/null)"
+  local dir="$(dirname $fqe 2>/dev/null)"
+
+  if [[ ! -x "$fqe" ]]; then
+    echo "cdx: '$exe' not found."
+    return 1
+  fi
+
+  if [[ ! -d "$dir" ]]; then
+    echo "cdx: '$dir' is not a directory"
+    return 1
+  fi
+
+  cd $dir
+
+  return  $?
+}
+