Gipply takes an URL to a diff and applies with a git apply. Helps to quickly customize dwm, for instance.

gipply.sh

#!/bin/bash                                                
url="$1"

# Check if received parameter
if [ -z "$url" ]
then
        echo "URL to apply .diff must be supplied"
        exit
fi
echo "Applying ${url}..."
curl "$url" | git apply -v