diff --git a/appendix/cache_cleaner.lua b/appendix/purge_cache.lua
similarity index 100%
rename from appendix/cache_cleaner.lua
rename to appendix/purge_cache.lua
diff --git a/appendix/purge_cache.sh b/appendix/purge_cache.sh
new file mode 100755
index 0000000..91c295e
--- /dev/null
+++ b/appendix/purge_cache.sh
@@ -0,0 +1,5 @@
+#!/bin/zsh
+# cron script for purge cache
+source /home/ubuntu/.zshrc
+cd /home/ubuntu/waifu2x
+th appendix/purge_cache.lua
diff --git a/appendix/run-web.sh b/appendix/run-web.sh
old mode 100644
new mode 100755