From 02381c71f21984338dae7b6ac68c60783506f328 Mon Sep 17 00:00:00 2001
From: Malin Freeborn <malinfreeborn@posteo.net>
Date: Tue, 11 Feb 2025 21:16:49 +0100
Subject: [PATCH] add collatz conjecture

---
 basics/Joyous_ASCII.md | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/basics/Joyous_ASCII.md b/basics/Joyous_ASCII.md
index 1c99a4e..3597ddb 100644
--- a/basics/Joyous_ASCII.md
+++ b/basics/Joyous_ASCII.md
@@ -6,7 +6,20 @@ tags: [ "fun" ]
 - `asciiquarium`
 - `cbonsai -lim "$(fortune)"`
 
-```bash
+```sh
 cow=$(cowsay -l | sort -R | head  -1)
 fortune -s | figlet | cowsay -nf $cow | lolcat
 ```
+
+Watch the [Collatz Conjecture](https://en.wikipedia.org/wiki/Collatz_conjecture) collapse:
+
+```sh
+x="$(du -sc ~/.cache | tr -d '[:alpha:]' | tail -1)"
+until [ "$x" -eq "1" ]; do
+    test "$(( x % 2 ))" -eq 0 && x=$(( x / 2 )) || \
+        x=$(( x * 3 + 1 ))
+    clear -x
+    figlet "$x" | lolcat
+    sleep 1
+done
+```