simple script to package files into a bootable iso

build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="Package" default="help" basedir=".">

    <!--
        Ant Build file to run package tasks.
    -->

    <property file="config/application.properties"/>

    <!--
        Help target.
    -->

    <target name="help"
        description="Show help menu.">
        <echo message="Use ant -p to see all available targets."/>
    </target>

    <!--
        Create ISO which includes custom preseed file and other modifications.
    -->

    <target name="iso-create" description="Create ISO which includes custom preseed file.">

        <input message="Please enter location of Ubuntu ISO :"
            addproperty="iso.package.input.image" />

        <input message="Please enter location to mount Ubuntu ISO :"
            addproperty="iso.package.input.mount" />

        <input message="Please enter location to mount Ubuntu ISO :"
            addproperty="iso.package.input.unpack" />

        <echo message="Extracting Ubuntu ISO."/>

        <exec executable="mount"
            dir="${user.dir}/" >
            <arg value="-o"/>
            <arg value="loop"/>
            <arg value="${iso.package.input.image}"/>
            <arg value="${iso.package.input.mount}"/>
        </exec>

        <mkdir dir="${iso.package.input.unpack}"/>

        <copy todir="${iso.package.input.unpack}">
          <fileset dir="${iso.package.input.mount}" followsymlinks="false"/>
        </copy>

        <input message="Please enter location of preseed file :"
            addproperty="iso.package.input.preseed" />

        <input message="Please enter location of modified isolinux folder :"
            addproperty="iso.package.input.isolinux" />

        <echo message="Aggregating Modifications."/>

        <copy file="${iso.package.input.preseed}" tofile="${iso.package.input.unpack}/preseed/custom.seed"/>

        <copy file="${iso.package.input.isolinux}/isolinux.cfg" tofile="${iso.package.input.unpack}/isolinux/isolinux.cfg" overwrite="true"/>
        <copy file="${iso.package.input.isolinux}/text.cfg" tofile="${iso.package.input.unpack}/isolinux/text.cfg" overwrite="true"/>

        <input message="Please enter location were Modified ISO should be stored :"
            addproperty="iso.package.output.iso" />

        <input message="Please enter name of iso to be displayed when mounted :"
            addproperty="iso.package.output.name" />

        <echo message="Packaging Modifications."/>

        <delete file="${iso.package.output.iso}"/>

        <exec executable="./mkisofs.sh" >
            <arg value="${iso.package.output.name}"/>
            <arg value="${iso.package.output.iso}"/>
            <arg value="${iso.package.input.unpack}"/>
        </exec>

        <echo message="Cleaning up workspace."/>

        <delete dir="${iso.package.input.unpack}"/>

        <exec executable="umount" dir="${user.dir}/" >
            <arg value="${iso.package.input.mount}"/>
        </exec>
	</target>

</project>

mkisofs.sh

#!/bin/sh
#Build phase
mkisofs -r -V "$1" \
            -cache-inodes \
            -J -l -b isolinux/isolinux.bin \
            -c isolinux/boot.cat -no-emul-boot \
            -boot-load-size 4 -boot-info-table \
            -o $2 $3