Find commits in a workspace for listed languages

stats.sh

#!/bin/bash

source_reg='\b(scala|cpp|js|java|coffee|rb|java|clj|py|groovy|html|ejs|sh|cljs)\b';
awk_counts='{
              counts[tolower($1)]++
            } 
            END { 
              for(type in counts) { 
                print(type, counts[type]) 
              } 
            }';

awk_sums='BEGIN {} 
          {
            total+=$2; 
            counts[$1]+=$2;
          } 
          END { 
            printf("%-10s %-8s %-8s \n","type", "commits", "percent"); 
            for(type in counts) { 
               printf("%-10s %-8d %-5.2f \n",type, counts[type], counts[type]*100/total) 
            } 
          }';

find . -type d | while read line
    do
    if ls -a "$line" | egrep '^\.git$'
        then
        cd "$line"
        git log -p -E --author="$1" | grep diff | egrep -o "\.[a-zA-Z]{1,8}" | egrep -io "$source_reg" | awk "$awk_counts"
        cd -
    fi
done | awk "$awk_sums"

usage: ./stats.sh [email protected]