Update cheatsheets

linux/grub-mkconfig

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# grub-mkconfig
+
+> Generate a GRUB configuration file.
+> More information: <https://www.gnu.org/software/grub/manual/grub/html_node/Invoking-grub_002dmkconfig.html>.
+
+- Do a dry run and print the configuration to `stdout`:
+
+`sudo grub-mkconfig`
+
+- Generate the configuration file:
+
+`sudo grub-mkconfig --output={{/boot/grub/grub.cfg}}`
+
+- Display help:
+
+`grub-mkconfig --help`