From: nobu.nokada@...
Date: 2004-05-13T19:09:31+09:00
Subject: Re: any ideas for a shell based on Ruby?

Hi,

At Fri, 7 May 2004 21:53:59 +0900,
Martinus wrote in [ruby-talk:99490]:
> Recently I have played with the idea of writing a shell based on ruby.
> I think this would be pretty cool, consider the following syntax:
> 
> user@machine ~> ls.sort(:time).last.rm
> 
> removes the oldest file in current directory:
> 1. ls returns a special array of Filename objects
> 2. The array is sorted by the attribute :date
> 3. the last element is chosen from the array
> 4. the file removes itself

$ irb -r pathname
irb(main):001:0> def ls(*path)
irb(main):002:1>   path=["*"] if path.empty?
irb(main):003:1>   path.collect {|p|
irb(main):004:2*     begin
irb(main):005:3*       p = File.join(p,"*") if File.lstat(p).directory?
irb(main):006:3>     rescue SystemCallError
irb(main):007:3>     end
irb(main):008:2>     Dir.glob(p)
irb(main):009:2>   }.flatten.collect(&Pathname.method(:new))
irb(main):010:1> end
=> nil
irb(main):011:0> ls.sort_by{|p|p.mtime}.last
=> #<Pathname:i686-linux>
irb(main):012:0>

> I am looking for other good ideas that justify creating such a ruby
> based shell :-)

Give a glance at lib/shell.

And irbsh may clue.
  http://raa.ruby-lang.org/list.rhtml?name=irbsh

-- 
Nobu Nakada