update openbsd notes page (still a draft)

content/notes/openbsd/index.md

@@ -115,6 +115,16 @@ php80_fpm(ok)
 
 ## Z-Shell
 
+### Where is this alias defined?
+
+I defined an alias `ls` but I forgot where it was.
+
+~~~console
+$ PS4='+%x:%I>' zsh -i -x -c '' |& grep ls
+~~~
+
+### Renaming multiple directories
+
 ~~~console
 $ count=1; zmv -n '*' '$f[1,4]/$((count++))-$f[12,-1]'
 mv -- 2023-08-05-problems-with-apt-keys-on-my-hotspots 2023/51-problems-with-apt-keys-on-my-hotspots