Pull Rocks rolls from beta7.rocksclusters.org

pull_rolls.sh

#!/bin/bash

AWK=$(which awk)
CURL=$(which curl)
ECHO=$(which echo)
GREP=$(which grep)
SORT=$(which sort)

BASE="http://beta7.rocksclusters.org/isos"
ROLLS=$(${CURL} -s ${BASE}/ | ${AWK} -F\" '/iso\"/ {print $8}' | ${SORT} -u)
DEFAULT_OPTS="-s -LO"
MD5_SUMS="md5sums"

${CURL} ${DEFAULT_OPTS} ${BASE}/${MD5_SUMS}

${ECHO} "Downloading..."

for ROLL in ${ROLLS}; do
    MSG="  ${ROLL}"
    if [[ -f ${ROLL} ]]; then
        OPTS="${DEFAULT_OPTS} -z ${ROLL} "
        MSG="${MSG} if newer..."
    else
        OPTS="${DEFAULT_OPTS}"
        MSG="${MSG}..."
    fi

    ${ECHO} ${MSG}
    ${CURL} ${OPTS} ${BASE}/${ROLL}

    ROLL_MD5=$(md5sum ${ROLL})

    ${GREP} -q ${ROLL_MD5} ./${MD5_SUMS}

    if [[ 0 -eq $? ]]; then
        ${ECHO} "    MD5SUM verification success for ${ROLL}"
    else
        ${ECHO} "    MD5SUM verification failure for ${ROLL}"
    fi

done