Unwanted scan() method behavior

Panagiotis_Atmatzid1 · 14 August 2011 17:31

Greeting to everyone from Greece!

I'm writing a string which will make a list of 'fail2ban.log' captured IP addresses dump them into SQLite and them display some statistics via Sinatra. I'm using scan() method to grab the needed lines. The lines I'd like to grab are like this:

···

--
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban 78.xxx.xxx.17x
--
Although these are ssh brute-force login attempts I'd switch numbers with 'x' letters in the above sample.

A typical fail2ban.log file is like this:

--
2011-07-23 02:03:50,741 fail2ban.server : INFO Changed logging target to /var/log/fail2ban.log for Fail2ban v0.8.4
2011-07-23 02:03:50,743 fail2ban.jail : INFO Creating new jail 'ssh-ipfw'
2011-07-23 02:03:50,745 fail2ban.jail : INFO Jail 'ssh-ipfw' uses poller
2011-07-23 02:03:50,853 fail2ban.filter : INFO Added logfile = /var/log/secure.log
2011-07-23 02:03:50,856 fail2ban.filter : INFO Set maxRetry = 3
2011-07-23 02:03:50,859 fail2ban.filter : INFO Set findtime = 600
2011-07-23 02:03:50,861 fail2ban.actions: INFO Set banTime = 600
2011-07-23 02:03:51,030 fail2ban.jail : INFO Jail 'ssh-ipfw' started
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban 78.xxx.xxx.17x
2011-07-23 02:14:51,441 fail2ban.actions: WARNING [ssh-ipfw] Unban 78.xxx.xxx.17x
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Unban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Unban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Unban <ip>
--

Here is my script so far:

class Myzonereport
attr_reader :logfile

def initialize(logfile)
raise "No fail2ban log file found!" if (logfile.empty?)
@logfile = logfile
end

def readlog
   puts "I can't read the log file" unless (File.readable?(@logfile) || File.empty?(@logfile))
   log = File.read(@logfile)
   log.scan(/^(\d{4}-\d\d-\d\d).*?(\d{2}:\d{2}:\d{2},\d{3}).*?(Ban).*?(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})/).each do |date, time, string, ip|
       puts "id: #{time} | date: #{date} | IP: #{ip}"
   end
end

end

x = Myzonereport.new('fail2ban.log')
puts x.readlog

My problem though is that the output is printed 2 times. The first time in the form I want using puts and a second time in 'raw mode'. Like this:
--
id: 23:37:50,235 | date: 2011-08-09 | IP: <ip>
id: 02:09:32,868 | date: 2011-08-10 | IP: <ip>

2011-07-23
02:04:51,107
Ban
<ip>
2011-07-23
05:22:45,963
Ban
<ip>
2011-07-23
12:07:25,377
Ban
<ip>
[…]

I can't tell why this happens. Should I use another method in order to grab the pattern I want? Is this scan's default behavior? I'm getting same results if I don't use any (puts or other) method in the loop.

Best Regards & thanks in advance for your time

--
Panagiotis Atmatzidis

personal: atma@convalesco.org
lists: ml@convalesco.org
blog: http://www.convalesco.org

The wise man said: "Never argue with an idiot. They bring you down to their level and beat you with experience."

11142 · 14 August 2011 17:58

Did you mean to use log.scan(/<snip>/).each{} instead of
log.scan(/<snip>/){} ? Note that your version calls each on the
results of scan, instead of passing a block to scan.

The return value of each is simply the array it was called on itself.

The return value of scan w/o block is array of groups matched by regex
(arrays), w/ block - the string itself.

-- Matma Rex

Gunther_Diemant · 14 August 2011 19:22

I would say, you should only call
x.readlog
and not
puts x.readlog

You call put in the method which gives you the desired output. The 'raw'
output is the return value of the readlog method, which you don't want to be
printed.

···

2011/8/14 Panagiotis Atmatzidis <ml@convalesco.org>

Greeting to everyone from Greece!

I'm writing a string which will make a list of 'fail2ban.log' captured IP
addresses dump them into SQLite and them display some statistics via
Sinatra. I'm using scan() method to grab the needed lines. The lines I'd
like to grab are like this:
--
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban
78.xxx.xxx.17x
--
Although these are ssh brute-force login attempts I'd switch numbers with
'x' letters in the above sample.

A typical fail2ban.log file is like this:

--
2011-07-23 02:03:50,741 fail2ban.server : INFO Changed logging target to
/var/log/fail2ban.log for Fail2ban v0.8.4
2011-07-23 02:03:50,743 fail2ban.jail : INFO Creating new jail
'ssh-ipfw'
2011-07-23 02:03:50,745 fail2ban.jail : INFO Jail 'ssh-ipfw' uses
poller
2011-07-23 02:03:50,853 fail2ban.filter : INFO Added logfile =
/var/log/secure.log
2011-07-23 02:03:50,856 fail2ban.filter : INFO Set maxRetry = 3
2011-07-23 02:03:50,859 fail2ban.filter : INFO Set findtime = 600
2011-07-23 02:03:50,861 fail2ban.actions: INFO Set banTime = 600
2011-07-23 02:03:51,030 fail2ban.jail : INFO Jail 'ssh-ipfw' started
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban
78.xxx.xxx.17x
2011-07-23 02:14:51,441 fail2ban.actions: WARNING [ssh-ipfw] Unban
78.xxx.xxx.17x
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Unban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Unban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Unban <ip>
--

Here is my script so far:

class Myzonereport
attr_reader :logfile

def initialize(logfile)
  raise "No fail2ban log file found!" if (logfile.empty?)
  @logfile = logfile
end

def readlog
  puts "I can't read the log file" unless (File.readable?(@logfile) ||
File.empty?(@logfile))
  log = File.read(@logfile)

log.scan(/^(\d{4}-\d\d-\d\d).*?(\d{2}:\d{2}:\d{2},\d{3}).*?(Ban).*?(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})/).each
do |date, time, string, ip|
      puts "id: #{time} | date: #{date} | IP: #{ip}"
  end
end

end

x = Myzonereport.new('fail2ban.log')
puts x.readlog

My problem though is that the output is printed 2 times. The first time in
the form I want using puts and a second time in 'raw mode'. Like this:
--
id: 23:37:50,235 | date: 2011-08-09 | IP: <ip>
id: 02:09:32,868 | date: 2011-08-10 | IP: <ip>

2011-07-23
02:04:51,107
Ban
<ip>
2011-07-23
05:22:45,963
Ban
<ip>
2011-07-23
12:07:25,377
Ban
<ip>
[…]

I can't tell why this happens. Should I use another method in order to grab
the pattern I want? Is this scan's default behavior? I'm getting same
results if I don't use any (puts or other) method in the loop.

Best Regards & thanks in advance for your time

--
Panagiotis Atmatzidis

personal: atma@convalesco.org
lists: ml@convalesco.org
blog: http://www.convalesco.org

The wise man said: "Never argue with an idiot. They bring you down to their
level and beat you with experience."

11142 · 14 August 2011 18:06

I re-read your mail and realized that I don't really understand what
you're trying to accomplish, and my previous mail wasn't probably
really useful. Sorry.

-- Matma Rex

Panagiotis_Atmatzid1 · 14 August 2011 22:48

Hello,

I would say, you should only call
x.readlog
and not
puts x.readlog

You call put in the method which gives you the desired output. The 'raw'
output is the return value of the readlog method, which you don't want to be
printed.

I had the feeling that it was something that obvious that I'm missing but I focused so much on the function that I missed it!

Thanks

···

On 14 Αυγ 2011, at 10:22 μ.μ., Gunther Diemant wrote:

2011/8/14 Panagiotis Atmatzidis <ml@convalesco.org>

Greeting to everyone from Greece!

I'm writing a string which will make a list of 'fail2ban.log' captured IP
addresses dump them into SQLite and them display some statistics via
Sinatra. I'm using scan() method to grab the needed lines. The lines I'd
like to grab are like this:
--
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban
78.xxx.xxx.17x
--
Although these are ssh brute-force login attempts I'd switch numbers with
'x' letters in the above sample.

A typical fail2ban.log file is like this:

--
2011-07-23 02:03:50,741 fail2ban.server : INFO Changed logging target to
/var/log/fail2ban.log for Fail2ban v0.8.4
2011-07-23 02:03:50,743 fail2ban.jail : INFO Creating new jail
'ssh-ipfw'
2011-07-23 02:03:50,745 fail2ban.jail : INFO Jail 'ssh-ipfw' uses
poller
2011-07-23 02:03:50,853 fail2ban.filter : INFO Added logfile =
/var/log/secure.log
2011-07-23 02:03:50,856 fail2ban.filter : INFO Set maxRetry = 3
2011-07-23 02:03:50,859 fail2ban.filter : INFO Set findtime = 600
2011-07-23 02:03:50,861 fail2ban.actions: INFO Set banTime = 600
2011-07-23 02:03:51,030 fail2ban.jail : INFO Jail 'ssh-ipfw' started
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban
78.xxx.xxx.17x
2011-07-23 02:14:51,441 fail2ban.actions: WARNING [ssh-ipfw] Unban
78.xxx.xxx.17x
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Ban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Unban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Unban <ip>
2011-07-23 02:04:51,107 fail2ban.actions: WARNING [ssh-ipfw] Unban <ip>
--

Here is my script so far:

class Myzonereport
attr_reader :logfile

def initialize(logfile)
raise "No fail2ban log file found!" if (logfile.empty?)
@logfile = logfile
end

def readlog
puts "I can't read the log file" unless (File.readable?(@logfile) ||
File.empty?(@logfile))
log = File.read(@logfile)

log.scan(/^(\d{4}-\d\d-\d\d).*?(\d{2}:\d{2}:\d{2},\d{3}).*?(Ban).*?(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})/).each
do |date, time, string, ip|
puts "id: #{time} | date: #{date} | IP: #{ip}"
end
end

end

x = Myzonereport.new('fail2ban.log')
puts x.readlog

My problem though is that the output is printed 2 times. The first time in
the form I want using puts and a second time in 'raw mode'. Like this:
--
id: 23:37:50,235 | date: 2011-08-09 | IP: <ip>
id: 02:09:32,868 | date: 2011-08-10 | IP: <ip>

2011-07-23
02:04:51,107
Ban
<ip>
2011-07-23
05:22:45,963
Ban
<ip>
2011-07-23
12:07:25,377
Ban
<ip>
[…]

I can't tell why this happens. Should I use another method in order to grab
the pattern I want? Is this scan's default behavior? I'm getting same
results if I don't use any (puts or other) method in the loop.

Best Regards & thanks in advance for your time

--
Panagiotis Atmatzidis

personal: atma@convalesco.org
lists: ml@convalesco.org
blog: http://www.convalesco.org

The wise man said: "Never argue with an idiot. They bring you down to their
level and beat you with experience."

--
Panagiotis Atmatzidis

personal: atma@convalesco.org
lists: ml@convalesco.org
blog: http://www.convalesco.org

The wise man said: "Never argue with an idiot. They bring you down to their level and beat you with experience."

Panagiotis_Atmatzid1 · 14 August 2011 18:46

Hello,

Thanks for reply,

I re-read your mail and realized that I don't really understand what
you're trying to accomplish, and my previous mail wasn't probably
really useful. Sorry.

I don't blame you for that, neither would I probably.

-- Matma Rex

Here's a better explanation:

···

On 14 Αυγ 2011, at 9:06 μ.μ., Bartosz Dziewoński wrote:

-------------------------------------

$ sed 's/[0-9]\{1,3\}$\.[0-9]\{1,3\}$\{3\}/(127.0.0.1)/' <fail2ban.log > fail2ban.log
$ cat fail2ban.log

2011-08-07 23:32:09,210 fail2ban.server : INFO Changed logging target to /var/log/fail2ban.log for Fail2ban v0.8.4
2011-08-07 23:32:09,237 fail2ban.jail : INFO Creating new jail 'ssh-ipfw'
2011-08-07 23:32:09,239 fail2ban.jail : INFO Jail 'ssh-ipfw' uses poller
2011-08-07 23:32:09,373 fail2ban.filter : INFO Added logfile = /var/log/secure.log
2011-08-07 23:32:09,376 fail2ban.filter : INFO Set maxRetry = 3
2011-08-07 23:32:09,379 fail2ban.filter : INFO Set findtime = 600
2011-08-07 23:32:09,381 fail2ban.actions: INFO Set banTime = 600
2011-08-07 23:32:09,659 fail2ban.jail : INFO Jail 'ssh-ipfw' started
2011-08-08 07:37:00,199 fail2ban.actions: WARNING [ssh-ipfw] Ban 127.0.0.1
2011-08-08 07:37:04,328 fail2ban.actions: WARNING [ssh-ipfw] Ban 127.0.0.1
2011-08-08 07:47:00,650 fail2ban.actions: WARNING [ssh-ipfw] Unban 127.0.0.1
2011-08-08 07:47:05,248 fail2ban.actions: WARNING [ssh-ipfw] Unban 127.0.0.1
2011-08-09 00:25:38,918 fail2ban.actions: WARNING [ssh-ipfw] Ban 127.0.0.1
2011-08-09 00:35:39,631 fail2ban.actions: WARNING [ssh-ipfw] Unban 127.0.0.1
2011-08-09 03:58:18,229 fail2ban.actions: WARNING [ssh-ipfw] Ban 127.0.0.1
2011-08-09 04:08:18,904 fail2ban.actions: WARNING [ssh-ipfw] Unban 127.0.0.1
2011-08-09 06:04:18,785 fail2ban.actions: WARNING [ssh-ipfw] Ban 127.0.0.1
2011-08-09 06:14:19,403 fail2ban.actions: WARNING [ssh-ipfw] Unban 127.0.0.1
2011-08-09 09:43:32,351 fail2ban.actions: WARNING [ssh-ipfw] Ban 127.0.0.1
2011-08-09 09:53:32,964 fail2ban.actions: WARNING [ssh-ipfw] Unban 127.0.0.1
2011-08-09 23:07:48,462 fail2ban.actions: WARNING [ssh-ipfw] Ban 127.0.0.1
2011-08-09 23:17:49,334 fail2ban.actions: WARNING [ssh-ipfw] Unban 127.0.0.1
2011-08-09 23:37:50,235 fail2ban.actions: WARNING [ssh-ipfw] Ban 127.0.0.1
2011-08-09 23:47:50,446 fail2ban.actions: WARNING [ssh-ipfw] Unban 127.0.0.1
2011-08-10 02:09:32,868 fail2ban.actions: WARNING [ssh-ipfw] Ban 127.0.0.1
2011-08-10 02:19:33,067 fail2ban.actions: WARNING [ssh-ipfw] Unban 127.0.0.1
2011-08-10 13:41:46,288 fail2ban.actions: WARNING [ssh-ipfw] Ban 127.0.0.1
2011-08-10 13:51:47,117 fail2ban.actions: WARNING [ssh-ipfw] Unban 127.0.0.1
2011-08-10 22:50:44,647 fail2ban.actions: WARNING [ssh-ipfw] Ban 127.0.0.1
2011-08-10 23:00:45,106 fail2ban.actions: WARNING [ssh-ipfw] Unban 127.0.0.1
2011-08-10 23:18:48,976 fail2ban.actions: WARNING [ssh-ipfw] Ban 127.0.0.1
2011-08-10 23:28:49,140 fail2ban.actions: WARNING [ssh-ipfw] Unban 127.0.0.1
2011-08-11 07:32:36,636 fail2ban.server : INFO Changed logging target to /var/log/fail2ban.log for Fail2ban v0.8.4
2011-08-11 07:32:36,664 fail2ban.jail : INFO Creating new jail 'ssh-ipfw'
2011-08-11 07:32:36,666 fail2ban.jail : INFO Jail 'ssh-ipfw' uses poller
2011-08-11 07:32:36,800 fail2ban.filter : INFO Added logfile = /var/log/secure.log
2011-08-11 07:32:36,802 fail2ban.filter : INFO Set maxRetry = 3
2011-08-11 07:32:36,806 fail2ban.filter : INFO Set findtime = 600
2011-08-11 07:32:36,808 fail2ban.actions: INFO Set banTime = 600
2011-08-11 07:32:36,974 fail2ban.jail : INFO Jail 'ssh-ipfw' started

$ cat myzonereport.rb

#!/usr/bin/env ruby

# encoding: UTF-8

# ZoneReport version v.02-alpha
# atma@convalesco.org

#require 'socket'

class Myzonereport
  attr_reader :logfile

  def initialize(logfile)
    raise "No fail2ban log file found!" if (logfile.empty?)
    @logfile = logfile
    @list = Hash.new
  end

  def readlog
    puts "I can't read the log file" unless (File.readable?(@logfile) || File.empty?(@logfile))
    log = File.read(@logfile)
    log.scan(/^(\d{4}-\d\d-\d\d).*?(\d{2}:\d{2}:\d{2},\d{3}).*?(Ban).*?(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})/).each do |date, time, string, ip|
        puts "id: #{time} | date: #{date} | IP: #{ip}"
    end
  end

  def rename
    time = Time.new
    date = time.strftime("%Y-%m-%d")
    if (File.exists?(@logfile) && File.readable?(@logfile))
      File.rename(@logfile, @logfile + "-" + date + '.log')
      File.new(@logfile)
    else
      puts "File '#{@logfile}' does not exist or it's not readable!"
    end
  end

end

x = Myzonereport.new('fail2ban.log')
puts x.readloge[1me[3m%e[23me[1me[0m

$ ruby myzonereport.rb

atma@angel:/Volumes/atmosx/Programming/test/ > ruby myzonereport.rb
id: 07:37:00,199 | date: 2011-08-08 | IP: 127.0.0.1
id: 07:37:04,328 | date: 2011-08-08 | IP: 127.0.0.1
id: 00:25:38,918 | date: 2011-08-09 | IP: 127.0.0.1
id: 03:58:18,229 | date: 2011-08-09 | IP: 127.0.0.1
id: 06:04:18,785 | date: 2011-08-09 | IP: 127.0.0.1
id: 09:43:32,351 | date: 2011-08-09 | IP: 127.0.0.1
id: 23:07:48,462 | date: 2011-08-09 | IP: 127.0.0.1
id: 23:37:50,235 | date: 2011-08-09 | IP: 127.0.0.1
id: 02:09:32,868 | date: 2011-08-10 | IP: 127.0.0.1
id: 13:41:46,288 | date: 2011-08-10 | IP: 127.0.0.1
id: 22:50:44,647 | date: 2011-08-10 | IP: 127.0.0.1
id: 23:18:48,976 | date: 2011-08-10 | IP: 127.0.0.1
2011-08-08
07:37:00,199
Ban
127.0.0.1
2011-08-08
07:37:04,328
Ban
127.0.0.1
2011-08-09
00:25:38,918
Ban
127.0.0.1
2011-08-09
03:58:18,229
Ban
127.0.0.1
2011-08-09
06:04:18,785
Ban
127.0.0.1
2011-08-09
09:43:32,351
Ban
127.0.0.1
2011-08-09
23:07:48,462
Ban
127.0.0.1
2011-08-09
23:37:50,235
Ban
127.0.0.1
2011-08-10
02:09:32,868
Ban
127.0.0.1
2011-08-10
13:41:46,288
Ban
127.0.0.1
2011-08-10
22:50:44,647
Ban
127.0.0.1
2011-08-10
23:18:48,976
Ban
127.0.0.1

-------------------------------------

I would like to output to be just:

Hope this example makes the issue more clear.

Best Regards!

--
Panagiotis Atmatzidis

personal: atma@convalesco.org
lists: ml@convalesco.org
blog: http://www.convalesco.org

The wise man said: "Never argue with an idiot. They bring you down to their level and beat you with experience."

Robert_K1 · 15 August 2011 15:06

A few more remarks: since those files can be large a better choice is
usually to use File.foreach. You can also shorten your regexp a bit
by using non capturing groups with repetition markers.

Example (untested):

File.foreach @logfile do |line|
  if /^(\d{4}(?:-\d\d){2}).*?(\d{2}(?::\d{2}){2},\d{3}).*?(Ban).*?(\d{1,3}(?:\.\d{1,3}){3})/
=~ line
    puts "id: #$2 | date: #$1 | IP: #$3"
  end
end

Kind regards

robert

···

On Mon, Aug 15, 2011 at 12:48 AM, Panagiotis Atmatzidis <ml@convalesco.org> wrote:

Hello,

On 14 Αυγ 2011, at 10:22 μ.μ., Gunther Diemant wrote:

I would say, you should only call
x.readlog
and not
puts x.readlog

You call put in the method which gives you the desired output. The 'raw'
output is the return value of the readlog method, which you don't want to be
printed.

I had the feeling that it was something that obvious that I'm missing but I focused so much on the function that I missed it!

--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

Panagiotis_Atmatzid1 · 16 August 2011 12:16

Hello,

···

On 15 Αυγ 2011, at 6:06 μ.μ., Robert Klemme wrote:

On Mon, Aug 15, 2011 at 12:48 AM, Panagiotis Atmatzidis > <ml@convalesco.org> wrote:

Hello,

On 14 Αυγ 2011, at 10:22 μ.μ., Gunther Diemant wrote:

I would say, you should only call
x.readlog
and not
puts x.readlog

You call put in the method which gives you the desired output. The 'raw'
output is the return value of the readlog method, which you don't want to be
printed.

I had the feeling that it was something that obvious that I'm missing but I focused so much on the function that I missed it!

A few more remarks: since those files can be large a better choice is
usually to use File.foreach. You can also shorten your regexp a bit
by using non capturing groups with repetition markers.

Example (untested):

File.foreach @logfile do |line|
if /^(\d{4}(?:-\d\d){2}).*?(\d{2}(?::\d{2}){2},\d{3}).*?(Ban).*?(\d{1,3}(?:\.\d{1,3}){3})/
=~ line
puts "id: #$2 | date: #$1 | IP: #$3"
end
end

Kind regards

robert

--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

Thanks for the pointers Robert! I'll do some checks and probably implement your solution which seems more appropriate,

Best Regards

--
Panagiotis Atmatzidis

personal: atma@convalesco.org
lists: ml@convalesco.org
blog: http://www.convalesco.org

The wise man said: "Never argue with an idiot. They bring you down to their level and beat you with experience."

Topic		Replies	Views
Awk to ruby 1.9 ruby-talk	11	129	7 December 2009
Problem with ".scan" ruby-talk	12	87	28 September 2006
Searching for a very fast string parser ruby-talk	6	121	9 March 2006
String.scan - catching overlapping patterns with lookahead ruby-talk	5	131	16 December 2004
Getting info from array ruby-talk	7	134	10 December 2012

Unwanted scan() method behavior

Related topics