git log –pretty=format:==%an –numstat | \ sed -r '/==.*/{s/^==;h;D};/^$/D;s/-/0/g;s/\t[^\t]+$;G;s/(.*)\n(.*)/\2\t\1/' \ | awk -F '\t' '{add[$1]+=$2;del[$1]+=$3} END {for (i in add) {print i,add[i],del[i]}}'