From: sto.mar@...
Date: 2012-09-07T22:34:53+09:00
Subject: Re: cant change the string

Am 07.09.2012 12:32, schrieb Ferdous ara:
>
> but I want
>
>          if host_name =~ /^BD/
>     host_name.gsub("BD","DK")
>          puts host_name
> end
>
> so if hostname is BD, it will change it to DK   (this number can be
> change anytime)
> So End result will be
>
> DK55
>
> but its not working
>
> Can any one please help me

Tip: form a habit of using irb to find out what is "not working":

1.9.3p194 :001 > host_name = 'BD55'
  => "BD55"
1.9.3p194 :002 > host_name.gsub("BD","DK")
  => "DK55"
1.9.3p194 :003 > puts host_name
BD55
  => nil

... and you can see that host_name.gsub(...) returns the expected
modified string, but host_name is unchanged.


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