# How to obtain Ruby version info from a program code

**URL:** <https://www.ruby-forum.com/t/how-to-obtain-ruby-version-info-from-a-program-code/52720>\
**Category:** Ruby\
**Created:** [January 18, 2006, 11:14am UTC](https://www.ruby-forum.com/t/how-to-obtain-ruby-version-info-from-a-program-code/52720 "2006-01-18T11:14:49Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![kajism](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/f475e1/32.png) [@kajism](https://www.ruby-forum.com/u/kajism)\
**Post date:** [January 18, 2006, 11:14am UTC](https://www.ruby-forum.com/t/how-to-obtain-ruby-version-info-from-a-program-code/52720/1 "2006-01-18T11:14:49Z")

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Hello,

Is there an API call returning Ruby version on which the code is  
running? Eg. the same information which is returned by running “ruby  
–version” on command line? I cannot find one.

Thanks,  
Karel

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**Author:** ![kajism](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/f475e1/32.png) [@kajism](https://www.ruby-forum.com/u/kajism)\
**Post date:** [January 18, 2006, 11:19am UTC](https://www.ruby-forum.com/t/how-to-obtain-ruby-version-info-from-a-program-code/52720/2 "2006-01-18T11:19:00Z")

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The constant RUBY\_VERSION.

regards,  
Jan F.

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**Author:** ![kajism](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/f475e1/32.png) [@kajism](https://www.ruby-forum.com/u/kajism)\
**Post date:** [January 18, 2006, 11:23am UTC](https://www.ruby-forum.com/t/how-to-obtain-ruby-version-info-from-a-program-code/52720/3 "2006-01-18T11:23:37Z")

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Guest wrote:

> The constant RUBY\_VERSION.
> 
> regards,  
> Jan F.

Great! Thanks for your fast response 🙂