Print title in bash

print_title.sh

#!/usr/bin/env bash

# Usage: print_title word1 word2 .. wordn
title=${*:1}
title_size=${#title}
output_line_size=$(echo "$title_size + 4" | bc -l)
eval printf '=%.0s' {1..$output_line_size}
printf "\n"
printf "= $title ="
printf "\n"
eval printf '=%.0s' {1..$output_line_size}