From: Rob Biedenharn <Rob@...>
Date: 2009-01-26T06:07:48+09:00
Subject: Re: Listing installed gems

On Jan 25, 2009, at 3:55 PM, Tom Cloyd wrote:

> Shilo Ayalon wrote:
>>> Doesn't
>>>
>>> gem list
>>>
>>> does what you want?
>>
>> Bingo, must have missed that in the gem --help (yup, feeling dumb  
>> right now).
>>
>> Thanks!
>>
> technically, the correct command, I believe is "gem list --local" or  
> "gem list -l"
>
> And, here's another one I just learned (from this list) - in case  
> you missed it:
>
> If I want to know if I have a particular gem installed, say "webby",  
> any of these will return the desired result:
>
> gem list | grep we
> gem list | grep ebb
> gem list | grep bey
>
> $ gem list | grep ebb
> webby (0.9.3)
>
> t.
> -- 
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Tom Cloyd, MS MA, LMHC - Private practice Psychotherapist
> Bellingham, Washington, U.S.A: (360) 920-1226
> << tc@tomcloyd.com >> (email)
> << TomCloyd.com >> (website) << sleightmind.wordpress.com >> (mental  
> health weblog)
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


In that case, you can give a prefix to gem list:

$ gem list --local ra

*** LOCAL GEMS ***

rack (0.9.1)
rails (2.1.2, 2.1.0, 2.0.2, 1.2.6, 1.2.5, 1.2.3)
rake (0.8.3, 0.8.1, 0.7.3)

This gets unfortunately messy with github building gems now:

$ gem list --local w

*** LOCAL GEMS ***

webgen (0.5.0, 0.4.7, 0.4.6)

$ gem list --local | grep -e paginate
mislav-will_paginate (2.3.6)

Oh well, "progress"!

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob@AgileConsultingLLC.com