Update cheatsheets

linux/tune2fs

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# tune2fs
+
+> Adjust parameters of an ext2, ext3 or ext4 filesystem.
+> May be used on mounted filesystems.
+> More information: <https://manned.org/tune2fs>.
+
+- Set the max number of counts before a filesystem is checked to 2:
+
+`tune2fs -c {{2}} {{/dev/sdXN}}`
+
+- Set the filesystem label to MY_LABEL:
+
+`tune2fs -L {{'MY_LABEL'}} {{/dev/sdXN}}`
+
+- Enable discard and user-specified extended attributes for a filesystem:
+
+`tune2fs -o {{discard,user_xattr}} {{/dev/sdXN}}`
+
+- Enable journaling for a filesystem:
+
+`tune2fs -o^{{nobarrier}} {{/dev/sdXN}}`