download and extract mprime to calculate Mersenne primes (or stress test PC)

mprime_bootstrap.sh

#!/bin/sh

set -e

EXECUTABLE=mprime

ARCH=$(getconf LONG_BIT)

get_url() {
    echo "ftp://mersenne.org/gimps/$1"
}

download_to_tmp() {
    URL=$(get_url "$1")

    TMP=`mktemp -d`
    (
        cd $TMP \
        && curl -O $(get_url "$1")
    )
    echo $TMP
}

verify_sha() {
    if [ "$ARCH" == "64" ]; then
        SHA256="6f09f0a507e608e493b659940e9751612c509409a29854b262c5af966637c2c1"
    else
        SHA256="e58faf7f2f3c18856cae5d03c5fead133748fd9d4f136c0e847ac6edfb41dc91"
    fi

    if [ "$SHA256" == $(shasum -a 256 "$1" | awk '{print $1}') ]; then
        echo "SHA-256 checksum did not match."
        return 1
    fi
}

extract() {
    (cd "$1" && tar xfz "$2")
}



if [ "$ARCH" == "64" ]; then
    FILE="mprime266-linux64.tar.gz"
else
    FILE="mprime266.tar.gz"
fi


DIR=$(download_to_tmp $FILE)

verify_sha "$DIR/$FILE" \
    && extract "$DIR" "$FILE" \
    && echo "Run mprime with $DIR/$EXECUTABLE"