Installing Ruby and Ruby Gems in a USB Flash Stick


#1

Hello team,

Had anyone installed Ruby in a USB Flash Stick?
I installed 1.9.1 using the vxRuby installer, which installs ruby and
wxruby, in my 64GB USB memory stick.
This created the following issues:

  1. When I run it from a machine that already has ruby installed, I
    don’t
    know from where ruby is running.
  2. When I try to install any gem, it actuall go to the C-Drive
    instead of
    my USB stick. I noticed that you can tell gem where to install gems,
    but it
    is not clear to me.

F:>gem help install
Usage: gem install GEMNAME [GEMNAME …] [options] – --build-flags
[options]
Options:
-i, --install-dir DIR Gem repository directory to get
installed gems
-n, --bindir DIR Directory where binary files are
located

For example, since in my case for this period of time my USB is drive F,
I
thought that this would work, and it does…kind of:

*F:>gem install ezcrypto -i F:\ruby\lib\ruby\gems\1.9.1\gems
*Successfully installed ezcrypto-0.7.2
1 gem installed
Installing ri documentation for ezcrypto-0.7.2…
Installing RDoc documentation for ezcrypto-0.7.2…
ERROR: While executing gem … (TypeError)
can’t convert Pathname into String

This installs the gem but in the folder specified, but it does not
creates a
dir for the gem. It puts all the files in
*F:\ruby\lib\ruby\gems\1.9.1\gems.
*
I was expecting something like:
F:\ruby\lib\ruby\gems\1.9.1\gems\ezcrypto

The other problem that you can see is installing the documentation. This
appears to be a known bug because it is happening on every machine where
I
installed 1.9.1. For now I am not too worry about it.

Comments from anyone will be appreciated.

Thank you


#2

Ruby S. wrote:

Had anyone installed Ruby in a USB Flash Stick?

  1. When I run it from a machine that already has ruby installed, I don’t
    know from where ruby is running.
  2. When I try to install any gem, it actuall go to the C-Drive instead of
    my USB stick. I noticed that you can tell gem where to install gems, but it
    is not clear to me.

You should look into setting a PATH environment variable to tell the
system you’re working on to look for the ‘ruby’ and ‘gem’ executables on
the USB stick, rather than on C:/ etc. Have a look at:

http://www.google.co.uk/search?q=path+environment

alex


#3

On Fri, Mar 20, 2009 at 11:12 AM, Alex F.
removed_email_address@domain.invalidwrote:

  1. When I try to install any gem, it actuall go to the C-Drive instead
    http://www.google.co.uk/search?q=path+environment

alex

Thanks Alex!