From: Fosiul Alam <lists@...>
Date: 2012-09-03T06:23:19+09:00
Subject: Re: How to get part of a string

Robert Klemme wrote in post #1074348:
> On Sun, Sep 2, 2012 at 7:37 PM, Fosiul Alam <lists@ruby-forum.com>
> wrote:
>> /dev/cciss/c0d5p1     1.8T   88M  1.7T   1% /xxx/xxxx/BD55-5
>>
>> Some how i jus want to get whats the code for the cluster
>> which is  BD55
>>
>>
>> now /xxx/xxxx/  is same for every line  and after US55(this value
>> different for every server)  there would be a - (BD55-)
>>
>> I would be really help full if any one can help me
>
> One way would be to read this line by line and use Regexp
>
> e.g.
>
> irb(main):001:0> line = '/dev/cciss/c0d5p1     1.8T   88M  1.7T   1%
> /xxx/xxxx/BD55-5'
> => "/dev/cciss/c0d5p1     1.8T   88M  1.7T   1% /xxx/xxxx/BD55-5"
> irb(main):002:0> line[%r{BD\d+(?=-\d$)}]
> => "BD55"
>

Hi
but its not working

irb(main):001:0> line ='/dev/cciss/c0d11p1        /xxx/xxxxx/BD55-11 
ext3    defaults,noatime,nodiratime     1       0'
=> "/dev/cciss/c0d11p1        /xxx/xxxx/BD55-11        ext3 
defaults,noatime,nodiratime     1       0"
irb(main):002:0> line[%r{US\d+(?=-\d$)}]
=> nil

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