diff --git a/tldr/linux/chattr b/tldr/linux/chattr
index 6c2c252d..919412ad 100644
--- a/tldr/linux/chattr
+++ b/tldr/linux/chattr
@@ -19,3 +19,11 @@ source: https://github.com/tldr-pages/tldr.git
 - Recursively make an entire directory and contents immutable:
 
 `chattr -R +i {{path/to/directory}}`
+
+- Mark a directory and its files to be interpreted in a case-insensitive manner:
+
+`chattr +F {{path/to/directory}}`
+
+- Set a file to only allow appending:
+
+`chattr +a {{path/to/file}}`