From: roktas <roktas@...>
Date: 2002-03-02T07:29:02+09:00
Subject: Re: Like tail -f

* Jean Lacoste <jean@chnou.factorial.l> [020302 00:13]:
> 
> I have to make a little prog wich works like the "tail -f" command. It
> reads a file continuously.
> 
> I tried this :
> 
> #!/usr/local/bin/ruby
> 
> logFileName = "/var/log/messages"
> 
> aFile = File.new(logFileName, "r")
> 
> loop {
> 	v = aFile.gets
> 	if v 
> 	  puts v
> 	else
> 	  select([aFile], nil, nil, nil)
> 	end
> 	}
> 
> 
> But it loops without stopping on the select line.
> 

Hello,

As an urgent help: you have to check the EOF (otherwise results with
an infinite loop), instead of loop { .. } try something like this:

while (v = aFile.gets)
    ...
end
   
Regards,

-- 
roktas