カンマ区切りのファイルをパイプ区切りのファイルに変換する。データにパイプがあると変になるよ

csv2psv.rb

#!/usr/bin/ruby
# usage: ruby csv2psv.rb path-to.csv > path-to.psv
#
# Copyright 2012 (C) zunda <zunda at freeshell.org>
#
# Permission is granted for use, copying, modification,
# distribution, and distribution of modified versions of this
# work as long as the above copyright notice is included.

require 'csv'

CSV.foreach(ARGV.shift) do |row|
	puts row.join('|')
end