diff --git a/pages/04.other/16.useful-commands/default.en.md b/pages/04.other/16.useful-commands/default.en.md
index 8a674f5..86f89b3 100644
--- a/pages/04.other/16.useful-commands/default.en.md
+++ b/pages/04.other/16.useful-commands/default.en.md
@@ -10,4 +10,11 @@ title: 'Useful Commands'
 ```
 -density: adjusts the quality of the resulting pdf. Higher values look better, but take longer to process
 -crop 50x100%: this splits the pdf into "left" and "right". 100x50% would split into "top" and "bottom"
-```
\ No newline at end of file
+```
+
+## Find
+### Change filtered permissions
+Using find with its `exec` switch one can set different permissions based on the usual find filters.  
+One example would be only changing file or directory permissions.  
+`$ find (directory) -type f -exec chmod 744 {} +`  
+Replacing `-type f` with `-type d` would execute the `chmod` for directories instead.