diff --git a/docs/linux/filesystems.md b/docs/linux/filesystems.md
index ead6dec..3dbec96 100644
--- a/docs/linux/filesystems.md
+++ b/docs/linux/filesystems.md
@@ -5,20 +5,22 @@
 #### Create shapshot
 ```bash
 btrfs subvolume snapshot xyz xyz-snapshot-path-name
-
-# or
-
+```
+or
+```bash
 btrfs subvolume snapshot main "main-`date +%Y-%m-%d`"
 ```
 #### Delete shapshot
 ```bash
 btrfs subvolume delete xyz-snapshot-path-name
-
-# or
-
+```
+or
+```bash
 btrfs subvolume delete "`echo main-* | tr ' ' \\\\n | sort | head -n 1`"
 ```
 
+### Common
+
 #### Resize
 ```bash
 btrfs filesystem resize max /mnt/dmp/