Genera imagenes minimas para el servidor

minbase.sh

#!/bin/bash

SOURCE=http://es.archive.ubuntu.com/ubuntu/
BASEPATH="images"
VARIANT=minbase
ARCH=amd64
INCLUDE="language-pack-es,language-pack-es-base,ssh,vim"

if [ -z $BASEPATH ];then
    echo "Defina una ruta base"
    exit 1
fi

mk_image()
{
    image=$(mktemp)

    dd if=/dev/zero of=${image} bs=1M count=1024 &> /dev/null
    mkfs.ext3 -F ${image} &> /dev/null
    echo ${image}
}

clean()
{
    img=$1
    path=$2

    echo -n "Limpiando: "
    sudo umount ${path}
    rm -rf ${img}
    echo "OK"
}

bootstrap()
{
    release=$1
    dest="${BASEPATH}/${ARCH}/${release}"
    user=${USER}
    error_log=$(mktemp)

    echo -n "Creando imagen temporal: "
    img=$(mk_image) && echo "OK" || {
        echo "FAIL"
        exit 1
    }

    echo -n "Creando punto de montaje: "
    [ -d $dest ] || mkdir -p $dest
    [ -d $dest ] && echo "OK" || {
        echo "FAIL"
        exit 1
    }

    echo -n "Montando imagen: "
    sudo mount ${img} ${dest} -o loop &> /dev/null && echo "OK" || {
        echo "FAIL"
        clean ${img} ${dest}
        exit 1
    }

    echo -n "Generando distribucion: "
    sudo debootstrap --arch $ARCH --include $INCLUDE --variant $VARIANT $release $dest 2> ${error_log} && {
        echo "OK"
        sudo umount ${dest} &> /dev/null && mv ${img} "${dest}/${release}-${VARIANT}.img"
        sudo chown ${user}. ${img} "${dest}/${release}-${VARIANT}.img" &> /dev/null
    }

    if [[ $? == 1 ]]; then
        echo "FAIL"
        clean ${img} ${dest}
        echo -e "----------\n"
        cat ${error_log}
        exit 1
    fi
}

bootstrap $1