diff --git a/tools/track_dimensions.fish b/tools/track_dimensions.fish
new file mode 100644
index 00000000..eb4d74b5
--- /dev/null
+++ b/tools/track_dimensions.fish
@@ -0,0 +1,3 @@
+function track_dimensions --on-signal WINCH
+    echo $COLUMNS x $LINES
+end