From: Srijayanth Sridhar <srijayanth@...>
Date: 2009-04-02T13:59:43+09:00
Subject: Re: Read and modify logs

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There's at least a couple of ways to remove duplicate lines.

1) results.uniq!
2) results.each { |l| b<<l } # b.keys gives you the set of unique lines

Hope that helps,

Jayanth

On Tue, Mar 31, 2009 at 9:11 PM, Michael Furmaniuk <mfurmaniuk@yahoo.com>wrote:

> I'm trying to read the entries in a logfile so I can enter its contents
> in a database, the lines are results I want to record, but in order to
> be sure that I don't have duplicates I'd like to be able to remove
> entries that I have read.  Is there an easy way to do this in Ruby so I
> can remove read lines from a file that is open once they've been
> captured?
>
> I'm not as worried about the conn_to_db.print line, that is something I
> have working ok, so if it looks funny please ignore it.
>
> What I have so far, and its untested as of yet as I am trying to get the
> form right, until I am sure its working .
>
> Example:
> while running
>  sleep 10
>  # read file into an array
>  f = file.open("mylogfile.log")
>  saved = File.open("archive.log", "a")
>  results = f.readlines
>  # Is there a way to remove everything that's been read here?
>  f.close
>  results.each_line do |sending|
>    conn_to_db.print("data #{sending}")
>    # Make sure we keep a backup
>    saved.puts("#{sending}")    s.flush
>  end
>  # Close the archive file
>  saved.close
> end
>
> Thanks for any help!
> --
> Posted via http://www.ruby-forum.com/.
>
>

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