diff --git a/developer/bin/list_loaded_launchjob_ids b/developer/bin/list_loaded_launchjob_ids
new file mode 100755
index 0000000000..f0d2fce956
--- /dev/null
+++ b/developer/bin/list_loaded_launchjob_ids
@@ -0,0 +1,84 @@
+#!/bin/bash
+#
+# list_loaded_launchjob_ids
+#
+
+###
+### settings
+###
+
+set -e                # exit on any uncaught error
+set +o histexpand     # don't expand history expressions
+shopt -s nocasematch  # case-insensitive regular expressions
+
+###
+### global variables
+###
+
+###
+### functions
+###
+
+launchjob_id_source_1 () {
+    if [[ "$EUID" -ne 0 ]]; then
+        /usr/bin/sudo -p 'Optionally give your sudo password: ' -- /bin/launchctl list | /usr/bin/cut -f3
+    fi
+}
+
+launchjob_id_source_2 () {
+    /bin/launchctl list | /usr/bin/cut -f3
+}
+
+merge_sources () {
+    /usr/bin/sort | /usr/bin/uniq
+}
+
+clean_sources () {
+    /usr/bin/egrep -v '^Label$' |                   \
+    /usr/bin/egrep -v '^com\.apple\.' |             \
+    /usr/bin/egrep -v '^0x[0-9a-f]+\.anonymous\.' | \
+    /usr/bin/egrep -v '^\[0x' |                     \
+    /usr/bin/egrep -v '\.[0-9]+$'
+}
+
+###
+### main
+###
+
+_list_loaded_launchjob_ids () {
+
+    {
+      launchjob_id_source_1;
+      launchjob_id_source_2;
+    } |                     \
+    clean_sources |         \
+    merge_sources
+
+}
+
+# process args
+if [[ $1 =~ ^-+h(elp)?$ ]]; then
+    printf "list_loaded_launchjob_ids
+
+List IDs for currently-loaded launchctl jobs, which may be useful
+in a Cask uninstall stanza, eg
+
+    uninstall :launchctl => 'job.id.goes.here'
+
+If this command is not run as the superuser, you will be prompted
+for a password to run a subcommand using 'sudo'.  The password is
+not required, but supplying it may reveal additional job ids.  To
+skip using the password, press <return> repeatedly.
+
+Launchctl jobs attributed to Apple are excluded from the output.
+
+See CONTRIBUTING.md and 'man launchctl' for more information.
+
+"
+    exit
+fi
+
+# dispatch main
+_list_loaded_launchjob_ids "${@}"
+
+#