Revise paste Generate Random Avatar BASH

#!/bin/bash
###################################################################### 
#Copyright (C) 2021  Kris Occhipinti
#https://filmsbykris.com

#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation version 3 of the License.

#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.

#You should have received a copy of the GNU General Public License
#along with this program.  If not, see <http://www.gnu.org/licenses/>.

#Generates random avatars using https://avatars.dicebear.com
######################################################################

seed="$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w ${1:-32} | head -n 1)"
types=("male" "female" "bottts" "human")
size="128"

#download avatars
for t in "${types[@]}"
do 
  wget -q "https://avatars.dicebear.com/api/${t}/avatar-${t}-${seed}.svg?h=${size}&w=${size}" -O ${t}-${seed}.svg
  echo ${t}-${seed}.svg
done