Script para crear un CD/DVD bootable de OpenBSD

Originalmente OpenBSD no distribuye ISO’s, por tanto o las buscamos de forma no oficial creadas por terceros o nos las creamos nosotros, yo me decidí por esta última opción y me hice un script en Bash para automatizar el proceso. El script en cuestión:

#!/bin/bash
##############################
#
# OpenBSD CD/DVD script
#
# Author: Oscar Moreno Martin
# Web: http://www.migranpipa.net
#
# This script create a bootable OpenBSD CD/DVD
#
# Editable parameters:
# - release: The number of the actual release.
# - version. Same as release without the point.
# - workdir: the directory where will be downloaded the data.
# Default is your_home_directory/openbsd
# - arch: computer architecture
# - Optionally change the mirror.
# Find more in http://www.openbsd.org/ftp.html#ftp
#
# Requirements:
# - wget.
# - mkisofs.
# - You will need a cd record program like as cdrecord or k3b
# to burn the ISO.
#
# The ISO will be saved in your home directory.
#
###############################

mirror=ftp://ftp.rediris.es/pub/OpenBSD/
workdir=~/openbsd
release=4.0
version=40
arch=i386

# Download base, binary, sources. Need a CD.
wget -c -N -nH --cut-dirs=4 -r -P $workdir/$release $mirror/$release/{ANNOUNCEMENT,Changelogs,HARDWARE,PACKAGES,PORTS,README,SIZES,
ftplist,root.mail,tools,{XF4,ports,src,sys}.tar.gz,$arch}

# Optional packages. Need a DVD.
#wget -c -N -nH --cut-dirs=4 -r -P $workdir/$release/packages/$arch $mirror/$release

# Download documentation.
wget -c -N -P $workdir/$release/doc $mirror/doc/obsd-faq.{txt,pdf}

# Download the song of the actual release.
wget -c -N -P $workdir/$release $mirror/songs/song$version.{mp3,ogg}

# Build the iso
echo "Creating ISO..."
mkisofs -r -v -l -o ~/OpenBSD-$release-$arch.iso -c boot.catalog -b $release/$arch/cdrom$version.fs -V \"OpenBSD-$release-$arch\" $workdir

# Delete all downloaded files
rm -rf $workdir

echo "ISO Created."

Le damos permiso de ejecución con:

chmod +x openbsdiso.sh

Y ejecutarlo:

./openbsdiso.sh