--- a/recipe.sh	Tue Jun 19 13:25:01 2018 +0800
+++ b/recipe.sh	Tue Jun 19 13:40:46 2018 +0800
@@ -11,7 +11,7 @@
 
 (
     echo '['
-    egrep 'gme_[a-z0-9_]+' -o player.js | sort -u | awk '{printf "    \"_" $0 "\",\n"}' | sed '$s/,$//'
+    grep -E 'gme_[a-z0-9_]+' -o player.js | sort -u | awk '{printf "    \"_" $0 "\",\n"}' | sed '$s/,$//'
     echo ']'
 ) > exported_functions.json