From: Tom Cloyd <tomcloyd@...>
Date: 2009-01-26T07:07:01+09:00
Subject: Re: Listing installed gems

Rob Biedenharn wrote:
> 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.
>> -- 
>>
>>
>
>
> 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)
OK, that's interesting, but not equivalent, I find:

* gem list -l ra => lists all local gems BEGINNING with "ra"
* gem list -l | grep ra => list all CONTAINING "ra"

It's nice to have options, eh? (unless you don't know about them!)

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)
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