From: "David A. Black" <dblack@...>
Date: 2004-08-21T03:23:02+09:00
Subject: Re: newbie programming question:

Hi --

On Sat, 21 Aug 2004, DiesIrae wrote:

> Hello,
> 
> I am trying to pass a variable to the backticks `` function, but it is
> always interpreted as a string.  How can I get it to read the value,
> instead?  And once I do that, how can I get the results into an array?
>  Here's the example code (this probably looks horribly wrong to some
> of you...):
> 
> 
> def ping_host host
>   command=Array.new
>   command[0]=`ping host`
>   puts
>   puts command
> end
> 
> puts 'What host would you like to ping?'
>   host = gets.chomp
>   ping_host host

You can interpolate your variable using the #{...} construct, and
if you want the results in an array, one line per element, you
can use #to_a:

  def ping_host(host)
    puts
    puts `ping -c2 #{host}`.to_a    # 2 pings only
  end

  puts 'What host would you like to ping?'
  ping_host(gets.chomp)


David

-- 
David A. Black
dblack@wobblini.net