Verify an Apache TomEE binary

verify.sh

#!/bin/bash

FILE="${1?Specify a TomEE  zip, war or tar.gz to verify}"
SHA="$FILE.sha512"

[ -f "$SHA" ] || {
    echo "Downloading sha512 for $FILE"
    BIN="$(basename "$FILE")"
    VER="$(echo "$BIN" | perl -pe 's,apache-(tomee-.*?)-[a-z]+\.(zip|tar.gz|war),$1,')"
    curl -s "https://downloads.apache.org/tomee/$VER/$BIN.sha512" > "$SHA"
}

echo "$(cat $SHA) $FILE" | sha512sum -c - || {
    echo "SHA-512 check failed: $FILE"
    exit 1
}