A filter for converting timestamps to a more readable date format

datefiltr.rb

#!/usr/bin/env ruby
#
# Authors: Kevin Wang and Alex Carrillo
# Description: Replaces UNIX timestamps with more human-friendy strings
#
# Make this file executable with `chmod +x datefiltr.rb` and put it in your path.
#
# Example usage:
#   $ datefiltr.rb < file-with-timestamps.txt > file-with-readable-dates.txt
#
# Or
#   $ cat file-with-timestamps.csv | datefiltr.rb > output.csv
#
#

require 'date'

while STDIN.gets
    a = $_
    a = a.sub /[0-9]{10}/ do |match| DateTime.strptime(match, '%s').strftime("%c") end while (a =~ /[0-9]{10}/) != nil
    print a
end  

@kevinwang -- again.