Update cheatsheets

linux/blkdiscard

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# blkdiscard
+
+> Discards device sectors on storage devices. Useful for SSDs.
+> More information: <https://manned.org/blkdiscard>.
+
+- Discard all sectors on a device, removing all data:
+
+`blkdiscard /dev/{{device}}`
+
+- Securely discard all blocks on a device, removing all data:
+
+`blkdiscard --secure /dev/{{device}}`
+
+- Discard the first 100 MB of a device:
+
+`blkdiscard --length {{100MB}} /dev/{{device}}`