enhanced_artistic_ascii.sh

#!/bin/bash

# Enhanced Artistic ASCII Art Generator

declare -a arts=(
"  /\_/\  \n ( o.o ) \n  > ^ <  \nA simple cat"
"  .-.
 (   )
  '-' \n  / | \ \nA basic face with flair"
"  /\
 /  \
/____\\ \n  /    \ \nA detailed pyramid"
"  *   *   * \n  * * * * * \n* * * * * * * \n  *  *  *  * \nA starry night expanded"
"  .-=====-. \n  \      / \n   \    /  \n    \  /   \n     \/    \nA swirling vortex"
)

if [ $# -eq 0 ]; then
  seed=$((RANDOM % ${#arts[@]}))
else
  seed=$(( $1 % ${#arts[@]} ))
fi

echo "${arts[$seed]}"