# How do i check what version of ruby and rails i have?

**URL:** <https://www.ruby-forum.com/t/how-do-i-check-what-version-of-ruby-and-rails-i-have/88865>\
**Category:** Rails\
**Created:** [March 15, 2007, 4:34am UTC](https://www.ruby-forum.com/t/how-do-i-check-what-version-of-ruby-and-rails-i-have/88865 "2007-03-15T04:34:14Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![desertfox](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/8491ac/32.png) [@desertfox](https://www.ruby-forum.com/u/desertfox)\
**Post date:** [March 15, 2007, 4:34am UTC](https://www.ruby-forum.com/t/how-do-i-check-what-version-of-ruby-and-rails-i-have/88865/1 "2007-03-15T04:34:14Z")

</div>

Hello,

What is the command to see what version of ruby and what version of  
rails i am running?

Thanks in advance!

Kristen

---

<div class="post-metadata">

**Author:** ![desertfox](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/8491ac/32.png) [@desertfox](https://www.ruby-forum.com/u/desertfox)\
**Post date:** [March 15, 2007, 4:39am UTC](https://www.ruby-forum.com/t/how-do-i-check-what-version-of-ruby-and-rails-i-have/88865/2 "2007-03-15T04:39:42Z")

</div>

Al Cholic wrote:

> Hello,
> 
> What is the command to see what version of ruby and what version of  
> rails i am running?
> 
> Thanks in advance!
> 
> Kristen

ruby -v

---

<div class="post-metadata">

**Author:** ![desertfox](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/8491ac/32.png) [@desertfox](https://www.ruby-forum.com/u/desertfox)\
**Post date:** [March 15, 2007, 4:42am UTC](https://www.ruby-forum.com/t/how-do-i-check-what-version-of-ruby-and-rails-i-have/88865/3 "2007-03-15T04:42:49Z")

</div>

Rama S. wrote:

> Al Cholic wrote:
> 
> > Hello,
> > 
> > What is the command to see what version of ruby and what version of  
> > rails i am running?
> > 
> > Thanks in advance!
> > 
> > Kristen
> 
> ruby -v

thanks

---

<div class="post-metadata">

**Author:** ![desertfox](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/8491ac/32.png) [@desertfox](https://www.ruby-forum.com/u/desertfox)\
**Post date:** [March 15, 2007, 5:36am UTC](https://www.ruby-forum.com/t/how-do-i-check-what-version-of-ruby-and-rails-i-have/88865/4 "2007-03-15T05:36:10Z")

</div>

How do I do this from inside the code? In case there are version  
dependencies (workarounds) that I want to drop off if I upgrade to a  
newer version.

Michael

---

<div class="post-metadata">

**Author:** ![desertfox](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/8491ac/32.png) [@desertfox](https://www.ruby-forum.com/u/desertfox)\
**Post date:** [March 15, 2007, 4:46am UTC](https://www.ruby-forum.com/t/how-do-i-check-what-version-of-ruby-and-rails-i-have/88865/5 "2007-03-15T04:46:04Z")

</div>

Rama S. wrote:

> Al Cholic wrote:
> 
> > What is the command to see what version of ruby and what version of  
> > rails i am running?
> > 
> > Thanks in advance!
> > 
> > Kristen
> 
> ruby -v

rails -v

and if you installed Rails via gem you can use:

gem list

to show the versions of all the components.

–  
Michael W.

---

<div class="post-metadata">

**Author:** ![desertfox](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/8491ac/32.png) [@desertfox](https://www.ruby-forum.com/u/desertfox)\
**Post date:** [March 15, 2007, 9:38pm UTC](https://www.ruby-forum.com/t/how-do-i-check-what-version-of-ruby-and-rails-i-have/88865/6 "2007-03-15T21:38:34Z")

</div>

there is always script/about

or  
ruby -v  
rails -v

---

<div class="post-metadata">

**Author:** ![desertfox](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/8491ac/32.png) [@desertfox](https://www.ruby-forum.com/u/desertfox)\
**Post date:** [March 15, 2007, 6:11am UTC](https://www.ruby-forum.com/t/how-do-i-check-what-version-of-ruby-and-rails-i-have/88865/7 "2007-03-15T06:11:11Z")

</div>

MichaelLatta wrote:

> How do I do this from inside the code? In case there are version  
> dependencies (workarounds) that I want to drop off if I upgrade to a  
> newer version.

> > Rails::VERSION::STRING  
> > =\> “1.2.1”

> > RUBY\_VERSION  
> > =\> “1.8.5”

–  
Michael W.

---

<div class="post-metadata">

**Author:** ![desertfox](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/8491ac/32.png) [@desertfox](https://www.ruby-forum.com/u/desertfox)\
**Post date:** [March 16, 2007, 12:46am UTC](https://www.ruby-forum.com/t/how-do-i-check-what-version-of-ruby-and-rails-i-have/88865/8 "2007-03-16T00:46:01Z")

</div>

On Mar 15, 2007, at 4:34 AM, Al Cholic wrote:

> What is the command to see what version of ruby and what version of  
> rails i am running?

script/about