fixing some stuff, will move away from bash soon

.local/bin/yt2rss

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+url="$1"
+
+if [ -z "$url" ]; then
+  echo "Usage: yt2rss.sh <youtube_url>" >&2
+  exit 1
+fi
+
+html=$(curl -Ls "$url")
+
+channel_id=$(printf '%s\n' "$html" | grep -oE 'https://www.youtube.com/channel/UC[[:alnum:]_-]+' | head -n1 | sed 's|.*/||')
+
+if [ -z "$channel_id" ]; then
+  echo "Could not find channel ID." >&2
+  exit 1
+fi
+
+echo "https://www.youtube.com/feeds/videos.xml?channel_id=$channel_id"
+