createInstallESDISO.sh

#!/bin/sh
set -e

InstallESDImage="${1:-/Applications/Install OS X Mavericks.app}/Contents/SharedSupport/InstallESD.dmg"
InstallESDMount=/Volumes/MavericksInstallESD

BaseSystemImage=$InstallESDMount/BaseSystem.dmg
BaseSystemSparseImage=/tmp/BaseSystem.sparseimage
BaseSystemSparseMount=/Volumes/MavericksBaseSystem

BaseSystemIso="$HOME/Desktop/OsXMavericksInstallESD.cdr"

# UDSP - UDIF SPARSE
# UDTO - UDIF DVD/CD-R master for export

hdiutil attach "$InstallESDImage" -readonly -verify -nobrowse -mountpoint $InstallESDMount
hdiutil convert $BaseSystemImage -format UDSP -o $BaseSystemSparseImage
hdiutil resize -size 8g $BaseSystemSparseImage
hdiutil attach $BaseSystemSparseImage -readwrite -verify -nobrowse -mountpoint $BaseSystemSparseMount

rm $BaseSystemSparseMount/System/Installation/Packages
cp -rp $InstallESDMount/Packages $BaseSystemSparseMount/System/Installation/

hdiutil detach $InstallESDMount
hdiutil detach $BaseSystemSparseMount
hdiutil compact $BaseSystemSparseImage
newSize=$(hdiutil resize -limits $BaseSystemSparseImage | tail -n 1 | cut -f 1)
hdiutil resize -size ${newSize}b $BaseSystemSparseImage
hdiutil convert $BaseSystemSparseImage -format UDTO -o "$BaseSystemIso"

rm $BaseSystemSparseImage

esd2iso.sh

#!/usr/bin/env bash
set -u -x -e

app_path="$1"
if [ ! -d "$app_path" ]; then
	printf 'No such Application at "%s"' "$app_path" >&2
	exit 1
fi
name="$(basename -- "$app_path" | sed 's/^Install //;s/^Mac //;s/^OS X //;s/^machOS //;s/\.app$//;s/ //g')"
esd_vol=~/Volumes/esd
iso_vol=~/Volumes/iso
cdr_file="$name.cdr"
iso_file="$name.iso"

hdiutil attach "$app_path/Contents/SharedSupport/InstallESD.dmg" -noverify -nobrowse -mountpoint "$esd_vol"
hdiutil create -o "$cdr_file" -size "8g" -type "SPARSE" -layout "SPUD" -fs "HFS+J"
hdiutil attach "$cdr_file.sparseimage" -noverify -nobrowse -mountpoint "$iso_vol"
asr restore -source "$esd_vol/BaseSystem.dmg" -target "$iso_vol" -noverify -noprompt -erase

base_vol="$(find /Volumes -type d -name '*Base System' -depth 1)"
rm "$base_vol/System/Installation/Packages"
cp -rpv "$esd_vol/Packages" "$base_vol/System/Installation/"
cp -rpv "$esd_vol/BaseSystem.chunklist" "$base_vol/"
cp -rpv "$esd_vol/BaseSystem.dmg" "$base_vol/"

vol_name="$(diskutil info -plist "$esd_vol" | plutil -extract 'VolumeName' 'xml1' -o - -- - | plutil -p -- - | sed 's/^"//;s/"$//')"
diskutil renameVolume "$base_vol" "$vol_name"
base_vol="/Volumes/$vol_name"

hdiutil detach "$esd_vol"
hdiutil detach "$base_vol"

hdiutil resize -sectors min "$cdr_file.sparseimage"
hdiutil convert "$cdr_file.sparseimage" -format "UDTO" -o "$iso_file"

mv "$iso_file.cdr" "$iso_file"
rm "$cdr_file.sparseimage"