From: tamouse mailing lists <tamouse.lists@...>
Date: 2013-04-25T11:11:18+09:00
Subject: Re: BEGINNER - Convert csv file to tsv

On Wed, Apr 24, 2013 at 4:00 AM, Hans Mackowiak <lists@ruby-forum.com> wrote:
> there is a lib in stdlib for parsing csv:
>
> require "csv"
>
> File.open("tmp.tsv","w") {|out|
>   CSV.foreach("tmp.csv") {|l|
>     out.write(l.join("\t")+"\n")
>   }
> }
>
> --
> Posted via http://www.ruby-forum.com/.
>

Here's a one-liner:

 ruby -r csv -e 'CSV.filter(File.open("input.csv","r"),
File.open("output.tsv","w"), :output_col_sep => "\t"){|row| row}'