From: jake kaiden <jakekaiden@...>
Date: 2011-07-28T02:36:30+09:00
Subject: Re: if condition for pattern matching

kotin 76 wrote in post #1013393:
> Hi ,
>
> i applying same above logic for below program
>
>   1
>   2 #!/usr/bin/env ruby
>   3
>   5  dev2 = File.readlines("dev_string2.txt")
>   8
>   9
>  10 for i in dev2
>  11 devstring=i.match(/\/dev\/[\w]+/)
>  12 puts devstring
>  14     if  devstring =~ %r{/dev/} then
>  15     puts  "pass"
>  16     end
>  17 end

hi Kotin -

  have a look here: http://www.ruby-doc.org/core/classes/File.html, and 
here: http://www.ruby-doc.org/core/classes/IO.html#M000896, for more 
info on ruby's File methods...

  i would use File.open with a block for this operation - something like 
this:

File.open("dev_string2.txt", "r"){|file|
  file.each{|line|
    if line =~ %r{/dev/}
      puts "pass: #{line}"
    end
  }
}

  note that running this the second line of your file does not pass, as 
it ends in "/dev", and not "/dev/".  i'm not sure if this is your 
intended result.  if you want the second line to pass as well, you could 
just change your regex to %r{/dev}.

  - j

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