From: Jeremy Bopp <jeremy@...>
Date: 2010-09-17T13:02:57+09:00
Subject: Re: undefined local variable or method '_FILE_'

On 09/16/2010 10:59 PM, Diogo Veras wrote:
> Hi all,
> 
> Don't know why but when I try to use the _FILE_ variable I'm getting the
> following error:
> 
> irb(main):001:0> puts File.dirname(_FILE_)
> NameError: undefined local variable or method `_FILE_' for main:Object
>   from (irb):1
>   from :0
> 
> I've got this error in Windows Seven and Ubuntu 10.04 LTS, both using
> Ruby 1.8.7
> 
> Have also tried running the code in .rb file but get the same error.
> Neither File.dirname(_FILE_) nor only _FILE_ seems to work.
> 
> Looked about it everywhere but got nothing. Any idea..?

You need to use __FILE__ (note the 2 underscores on each side).

-Jeremy