diff --git a/linux.md b/linux.md
index 82cd89acc..8deecd38c 100644
--- a/linux.md
+++ b/linux.md
@@ -12,6 +12,21 @@ title: Linux
 
     username ALL=(ALL) NOPASSWD:/sbin/restart whatever
 
+### Display the amount of available disk space
+
+```sh
+df
+df -h   # human-readable format
+df -a   # all filesystems
+```
+
+### Display disk usage
+
+```sh
+du
+du -hsx * | sort -rh | head -10    # largest 10 folders
+```
+
 ### Answer yes in a bash script
 
 ```bash