gravatar.sh
Shell script to fetch a user's gravatar photo
usage
# download default size (256x256px)
gravatar harrygallagher4@gmail.com
# ---> harrygallagher4@gmail.com.png
# specify size of 128x128px
gravatar harrygallagher4@gmail.com 128
# ---> harrygallagher4@gmail.com.png