The Quake III Arena sources as originally released under the GPL license on August 20, 2005.

code/macosx/timedemo.zsh

@@ -0,0 +1,26 @@
+#!/bin/zsh
+
+buildRoot=./build
+executable=$buildRoot/Quake3.app/Contents/MacOS/Quake3
+ls -l $executable
+
+flags="$flags +set timedemo 1"
+flags="$flags +set s_initsound 0"
+flags="$flags +set vm_cgame 1"
+flags="$flags +set vm_game 1"
+flags="$flags +set r_texturebits 16"
+flags="$flags +set r_depthbits 16"
+flags="$flags +set r_colorbits 16"
+flags="$flags +set stencilbits 8"
+
+flags="$flags +set r_appleTransformHint 1"
+
+echo flags=$flags
+
+function demo {
+    echo Demo $*
+    $executable $flags +demo $* |& egrep "(seconds|VM)"
+}
+
+demo foo
+