Script to download and check hash

download.sh

#!/usr/bin/env bash
#
# Usage:
#   download.sh URL DEST MD5
#
# Example:
#   download.sh \
#     http://a.mbbsindia.com/hbase/1.1.3/hbase-1.1.3-bin.tar.gz \
#     /var/downloads/cache/1c9f52d89cf665ef35f101cb8f2b57e4 \
#     1c9f52d89cf665ef35f101cb8f2b57e4
#

url="$1"
dest_path="$2"
expected_hash="$3"

curl -L# -o "$dest_path" "$url"

generated_hash=`md5 "$dest_path" | cut -d' ' -f4`

if [ "$generated_hash" == "$expected_hash" ]; then
  exit 0
else
  exit 1
fi