Update cheatsheets

tldr/linux/fadvise

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# fadvise
+
+> Control Linux file caching behavior.
+> More information: <https://manned.org/fadvise>.
+
+- Preload a file into cache:
+
+`fadvise {{-a|--advice}} willneed {{path/to/file}}`
+
+- Suggest dropping a file from cache:
+
+`fadvise {{path/to/file}}`
+
+- Display help:
+
+`fadvise --help`