diff --git a/content/blog/bgpscanner-backwards-compat.md b/content/blog/bgpscanner-backwards-compat.md
index d3c27ad..39d3e00 100644
--- a/content/blog/bgpscanner-backwards-compat.md
+++ b/content/blog/bgpscanner-backwards-compat.md
@@ -95,3 +95,7 @@ it was fun for me to write.
 Happy hacking!
 
 Lorenzo Cogotti
+
+> P.S. A gigantic and special thank you to [Rich's sh (POSIX shell) tricks](https://www.etalabs.net/sh_tricks.html),
+> for its enlightening list of shell recipes. In my opinion one of the most fundamental reads that anybody writing
+> a shell script should go through.