Output

RyBookPro:Desktop ryguy$ ./slop_iterm_example
{:terminal=>"iTerm", :help=>nil}
RyBookPro:Desktop ryguy$ ./slop_iterm_example --help
Usage: slop_iterm_example [options]
    -t, --terminal      Terminal to use. (default: iTerm)
    -h, --help          Display this help message.
RyBookPro:Desktop ryguy$ ./slop_iterm_example --terminal=MyTerm
{:terminal=>"MyTerm", :help=>nil}
RyBookPro:Desktop ryguy$ ./slop_iterm_example --terminal MyTerm
{:terminal=>"MyTerm", :help=>nil}
RyBookPro:Desktop ryguy$ ./slop_iterm_example -t MyTerm
{:terminal=>"MyTerm", :help=>nil}
RyBookPro:Desktop ryguy$ ./slop_iterm_example -t=MyTerm
{:terminal=>"MyTerm", :help=>nil}
RyBookPro:Desktop ryguy$

slop_example

#!/usr/bin/env ruby

require 'slop'

options = Slop.parse( help: true ) do
  on :t, :terminal=, 'Terminal to use.', default: 'iTerm'
end

p options.to_hash