A short shell-script that is used to count lines of files given one or more file-sufixes.

count_lines.sh

#!/bin/bash

#Example use: count_files.sh cs xml  // counts lines in *.cs and *.xml recursivly.

set -e

FILES="$@"

for f in $FILES; do
    echo -ne "*.$f "
    find . -name "*.$f" |
    while read file; do
        wc -l "$file" |
        awk '{print $1}';
    done |
    awk 'BEGIN { l = 0; s = 0 } {l+=$1} {s+=1} END {print s, l}'
done |
awk '{f+=$2} {l+=$3} {print $1.":\n  Files:", $2."\n  Lines:", $3."\n"} END {print "\n=================\n\nTotal:\n  Files:",f,"\n  Lines:",l}'