A shell script to download a gravatar image for an email in a given size as jpg

grabgravatar.sh

#!/bin/bash
if [ -z "$1" ];
then
	echo "pls provide mail"
	exit 1
else
  mail=$1
fi
if [ -z "$2" ];
then
#default
 size=200
else
 size=$2
fi
downloadUrl="https://gravatar.com/avatar/"$(md5 -s $mail | cut -d " " -f 4)"?s=$size"
curl -s -o "${mail}_${size}.jpg"  $downloadUrl

Tried this on Ubuntu but it can't find md5.

Changed to use Ubuntu's md5sum. Also fetches the QRCODE.

#!/bin/bash
if [ -z "$1" ];
then
	echo "pls provide mail"
	exit 1
else
  mail=$1
fi
if [ -z "$2" ];
then
#default
 size=200
else
 size=$2
fi

md5=`echo -n $mail | md5sum  | sed -En 's/  -//p'`
echo $md5
downloadUrl="https://en.gravatar.com/avatar/"$md5"?s=$size"
downloadQR="https://en.gravatar.com/$md5.qr?s=200"

curl -s -o "${mail}_${size}.jpg"  $downloadUrl
curl -s -o "${mail}_${md5}.jpg" $downloadQR

Thx! Love it. My script runs on OSX (forgot to mention it).