convers long numbers into readable ones

nicenumber.sh

#!/bin/bash

# usage:
#   $ echo 1234567|./nicenumber.sh
#   1,234,567
#   $ find .|wc -l|./nicenumber.sh
#   426,704

while read line; do
# run the number thru the comma mill
echo $line \
|sed '/....$/ s/^\(.*\)\(...\)$/\1,\2/;
/....,...$/ s/^\(.*\)\(...,...\)$/\1,\2/;
/....,...,...$/ s/^\(.*\)\(...,...,...\)$/\1,\2/;
/....,...,...,...$/ s/^\(.*\)\(...,...,...,...\)$/\1,\2/;
/....,...,...,...,...$/ s/^\(.*\)\(...,...,...,...,...\)$/\1,\2/'

done