pbcopy-in-irb.rb

# put this in your .irbrc and then you can do
#
#   irb-prompt > data = api.call
#   irb-prompt > c data.to_json
#
# which will copy the data to your clipboard.  general usage is
#
#   c(stuff, stuff, stuff)
#
#
  module Kernel
  private
    def c(*args)
      buf = args.join
      fork{ fork{ IO.popen('pbcopy', 'w'){|fd| fd.write(buf)} }; exit!(0)  }
    end
  end

http://stackoverflow.com/questions/881388/what-is-the-reason-for-performing-a-double-fork-when-creating-a-daemon

1. fork a child
2. fork a grandchild
3. the child exits without calling the normal exit handles, which would otherwise cause the child to be zombied waiting on the execution of it's grandchild - aka the child completely abandons the grandchild
4. grandchild completes the work

this is some of the 'standard' practice of creating a daemon:

ref:
Advanced Programming in the Unix Environment
W. Richard Stevens, 1992, Addison-Wesley, ISBN 0-201-56317-7.

Nice for OSX.. for linux just use

xself --clipboard --input insteast of pbcopy :)

Oh and nice to add also

  def paste()
      fork{ fork{ IO.popen('pbpaste', 'w'){|fd| fd.write(buf)} }; exit!(0)  }
    end

or xsel --clipboard --output

moving all of this into a gem -> https://github.com/ahoward/irbcp