diff --git a/004/codex-004.tex b/004/codex-004.tex
index 465de8a..21ae669 100644
--- a/004/codex-004.tex
+++ b/004/codex-004.tex
@@ -147,6 +147,8 @@ https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html\#Bindable-Readl
 
 https://stackoverflow.com/questions/7131670/make-a-bash-alias-that-takes-a-parameter
 
+https://tecadmin.net/how-to-create-bash-aliases-with-parameters/
+
 \chapter{What's to Like About Linux}
 
 \section{bash Aliases for \texttt{git}}