Add scripts to generate txt and html templates

templates/passphrase.txt.sh

@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+
+# USAGE: passphrase.txt.sh [ PIN_LENGTH [ PASSPHRASE_LENGTH ]]
+# PIN_LENGTH and PASSPHRASE_LENGTH can be omitted. A txt file will be written to stdout
+
+set -e
+set -u
+set -o pipefail
+
+# Script arguments, or use defaults
+PIN_LENGTH="${1:-8}"
+PASSPHRASE_LENGTH="${2:-30}"
+
+DATE_HEADER=$(cat <<EOF
+    DATE (YYYY-MM-DD)      
+                           
+       2025-__-__          
+                           
+         KEY ID            
+   0x________________      
+                           
+      SERIAL NUMBER        
+        ________           
+EOF
+)
+
+
+DATE_HEADER="$DATE_HEADER$(for ((i=8; i<=PIN_LENGTH; i++)); do printf '\n                           '; done)"
+
+KEYS=$(cat <<EOF
+     ADMIN PIN                  USER PIN     
+
+$(for ((i=1; i<=PIN_LENGTH; i++)); do
+	echo "0 1 2 3 4 5 6 7 8 9       0 1 2 3 4 5 6 7 8 9"
+done)
+EOF
+)
+
+echo "# https://github.com/drduh/YubiKey-Guide/blob/master/templates/passphrase.txt"
+echo ""
+
+paste -d " " <(echo "$DATE_HEADER") <(echo "$KEYS")
+
+cat <<EOF
+
+                        FOR EACH CHAR IN PASSPHRASE,
+                MARK CORRESPONDING COLUMN ON SEQUENTIAL ROW,
+                      THEN FOLD INWARD AND TAMPER SEAL
+
+EOF
+
+for ((i=1; i<=PASSPHRASE_LENGTH; i++)); do
+	echo "- A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9"
+done
+echo ""