Update cheatsheets

tldr/linux/xfs_admin

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# xfs_admin
+
+> Tune an XFS filesystem.
+> More information: <https://manned.org/xfs_admin>.
+
+- Display the filesystem label:
+
+`sudo xfs_admin {{[-l|--list]}} {{/dev/sdX}}`
+
+- Set the filesystem label:
+
+`sudo xfs_admin {{[-L|--Label]}} "{{label}}" {{/dev/sdX}}`
+
+- Display the filesystem UUID:
+
+`sudo xfs_admin {{[-u|--uuid]}} {{/dev/sdX}}`
+
+- Set the filesystem UUID (use with caution):
+
+`sudo xfs_admin {{[-U|--UUID]}} {{uuid}} {{/dev/sdX}}`
+
+- Generate a new UUID for the filesystem:
+
+`sudo xfs_admin {{[-U|--UUID]}} generate {{/dev/sdX}}`
+
+- Display help:
+
+`xfs_admin`