Update cheatsheets

tldr/btop

@@ -15,19 +15,19 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Start `btop` with the specified settings preset:
 
-`btop --preset {{0..9}}`
+`btop {{[-p|--preset]}} {{0..9}}`
 
 - Start `btop` in TTY mode using 16 colors and TTY-friendly graph symbols:
 
-`btop --tty_on`
+`btop {{[-t|--tty]}}`
 
 - Start `btop` in 256-color mode instead of 24-bit color mode:
 
-`btop --low-color`
+`btop {{[-l|--low-color]}}`
 
 - Set the update rate to 500 milliseconds:
 
-`btop --update 500`
+`btop {{[-u|--update]}} 500`
 
 - Exit `btop`:
 

tldr/deno

@@ -5,25 +5,38 @@ source: https://github.com/tldr-pages/tldr.git
 ---
 # deno
 
-> A secure runtime for JavaScript and TypeScript.
-> More information: <https://deno.land>.
+> A secure runtime for JavaScript, TypeScript, and WebAssembly.
+> Includes dependency management using `npm` or `jsr`, and tooling like bench, bundle, doc, and coverage.
+> More information: <https://docs.deno.com/runtime/reference/cli>.
 
-- Run a JavaScript or TypeScript file:
-
-`deno run {{path/to/file.ts}}`
-
-- Start a REPL (interactive shell):
+- Start a REPL (interactive shell, also known as Read-Eval-Print Loop):
 
 `deno`
 
-- Run a file with network access enabled:
+- Start a new project named sample and test it:
 
-`deno run --allow-net {{path/to/file.ts}}`
+`deno init sample && cd sample && deno test`
 
-- Run a file from a URL:
+- Run a file securely. It will ask (if needed) to allow net, read, etc:
 
-`deno run {{https://deno.land/std/examples/welcome.ts}}`
+`deno run {{path/to/file.ts}}`
 
-- Install an executable script from a URL:
+- Run a file with explicit permissions or allow all (only if you trust the source):
 
-`deno install {{https://deno.land/std/examples/colors.ts}}`
+`deno run {{[--allow-env|--allow-net|--allow-write|--allow-all]}} {{jsr:@deno/deployctl}}`
+
+- List and run tasks from `deno.json` or scripts from `package.json`:
+
+`deno task`
+
+- Install dependencies listed in `deno.json` or `package.json` (also lock files):
+
+`deno install`
+
+- Check types, format, and lint (fix if possible):
+
+`deno check && deno fmt && deno lint --fix`
+
+- Compile the script, imported dependencies, and runtime into a self contained executable:
+
+`deno compile {{path/to/file.ts}}`

tldr/linux/fftest

@@ -0,0 +1,13 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# fftest
+
+> Test force-feedback devices (e.g., controllers with rumble functionality).
+> More information: <https://manned.org/fftest>.
+
+- Open `fftest` on an event:
+
+`fftest {{/dev/input/eventX}}`