# Help regarding extracting a particular value in a file

**URL:** <https://www.ruby-forum.com/t/help-regarding-extracting-a-particular-value-in-a-file/61697>\
**Category:** Ruby\
**Created:** [May 26, 2006, 8:22am UTC](https://www.ruby-forum.com/t/help-regarding-extracting-a-particular-value-in-a-file/61697 "2006-05-26T08:22:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Tanushree\_B](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/b5ac83/32.png) [@Tanushree\_B](https://www.ruby-forum.com/u/Tanushree_B)\
**Post date:** [May 26, 2006, 8:22am UTC](https://www.ruby-forum.com/t/help-regarding-extracting-a-particular-value-in-a-file/61697/1 "2006-05-26T08:22:56Z")

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Hi all ,  
I am new to ruby.I need to retrieve values from a file  
in my ruby script.That file contains different nos of rows…  
and in single row i have many parameters which are  
separated by comma.How can i retrieve a particular parameter  
value from a file.can u plz help?  
example-  
my file contains data like

product1,product2,product3,…etc  
comp1,comp2,comp3…etc…

If i want to retrieve product2 how can i do it.Please help me.Now i am  
doing  
it  
by putting only single value in a row.

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<div class="post-metadata">

**Author:** ![Tanushree\_B](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/b5ac83/32.png) [@Tanushree\_B](https://www.ruby-forum.com/u/Tanushree_B)\
**Post date:** [May 26, 2006, 10:16am UTC](https://www.ruby-forum.com/t/help-regarding-extracting-a-particular-value-in-a-file/61697/2 "2006-05-26T10:16:08Z")

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2006/5/26, Tanushree B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> comp1,comp2,comp3…etc…
> 
> If i want to retrieve product2 how can i do it.Please help me.Now i am doing  
> it  
> by putting only single value in a row.

You can use CSV for this:

[http://ruby-doc.org/stdlib/libdoc/csv/rdoc/index.html](http://ruby-doc.org/stdlib/libdoc/csv/rdoc/index.html)

Kind regards

robert