From: Uday Thokala <udaykanth_t@...>
Date: 2007-08-24T20:27:46+09:00
Subject: Re: How to append some data at the beginning of a file

Ronald Fischer wrote:
>> I am newbie to Ruby so please spare me if the question looks silly. My
>> question is how to append data at the beginning of a file?
> 
> This is not so much a Ruby question, since nearly no operating system
> directly
> allows appending data to the beginning of a file. 

Thanks Ronald for your comments. I am wondering may be ruby got some way 
around it.

> The general solution
> is to create a new file, putting there the data in the right order,
> delete
> the old file and rename the new file to the name of the old one.
> 
> Renaming a file is done like this:
> 
>   File.rename("oldname","newname")

Yeah I implemented the above mentioned solution and it's working fine. 
The code is

newfile = File.new("test1","w")
newfile.puts "This line should appear at the top of each file";

oldfile = File.open("test", "r+")
oldfile.each_line { |line| newfile.puts line}

oldfile.close();
newfile.close();

File.delete("test");
File.rename("test1", "test");

Thanks,
Uday.
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