From: Panagiotis Atmatzidis <atma@...>
Date: 2009-12-08T01:35:25+09:00
Subject: Re: awk to ruby 1.9

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Hello,
On 07 Δεκ 2009, at 5:33 μ.μ., Bertram Scharpf wrote:

> Hi,
> 
> Am Samstag, 05. Dez 2009, 05:09:35 +0900 schrieb Panagiotis Atmatzidis:
>> ------------
>> 
>>    File.foreach(filename) do |line|
>>      puts "#{line}" if line =~ /Ban/
>>    end
>> 
>> ipadds.get_ips("fail2ban.log")
>> --------------
>> 
>> The output though parses lines the following: 
>> 
>> 2009-11-19 00:31:29,928 fail2ban.actions: WARNING [ssh-ipfw] Ban 203.169.139.171
>> 
>> I would like to use the output from the cli: "$ grep Ban fail2ban.log|awk -F "Ban" '{print $2}'"
> 
> The correct translation of `-F Ban "{print $2}"' would be
> 
>  ary = line.split /Ban/
>  puts ary[ 2]
> 
> I would prefer something like
> 
>  if line =~ /Ban\s+/ then
>    puts $'.split.first
>  end
> 
> You can play around that for the rest of the day:
> 
>  ary = line.split
>  while ary.any? do
>    if ary.shift == "Ban" then
>      puts ary.first
>      break
>    end
>  end
> 
> I don't think it's worth here the effort of IP address parsing but
> thats surely a matter of taste.
> 
> Bertram

First, thanks for the code.

The parsing that I use was ready actually and works quite nice. I'm not able to write regexp at that level yet. That's why I used it.

> 
> 
> -- 
> Bertram Scharpf
> Stuttgart, Deutschland/Germany
> *
> Discover String#notempty? at <http://raa.ruby-lang.org/project/step>.
> 

Panagiotis (atmosx) Atmatzidis

email:	atma@convalesco.org
URL:	http://www.convalesco.org
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- --
The wise man said: "Never argue with an idiot. They bring you down to their level and beat you with experience."

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