Definitely clean it up in the bash branch if you're willing. Thanks, Pat.

> On Dec 3, 2013, at 6:34 AM, patrick brisbin <notifications@github.com> wrote:
> 
> In linux:
> 
> >  
> >  fancy_echo "Installing GitHub CLI client ..."
> >    curl http://hub.github.com/standalone -sLo ~/.bin/hub
> >    chmod +x ~/.bin/hub
> >  ### end common-components/ruby-environment
> >  
> > +fancy_echo "Configuring Bundler for faster, parallel gem installation ..."
> > +  number_of_cores=`nproc`
> > +  bundle config --global jobs `expr $number_of_cores - 1`
> FWIW:
> 
> 'expr' is a program used in ancient shell code to do math. In Posix shells like bash, use
> $(( expression )). In bash and ksh93, you can also use '(( expression ))' or 'let
> expression' if you don't need to use the result in an expansion.
> 
> The backquote (`) is used in the old-style command substitution, e.g. foo=`command`. The
> foo=$(command) syntax is recommended instead. Backslash handling inside $() is less
> surprising, and $() is easier to nest. See http://mywiki.wooledge.org/BashFAQ/082
> I wouldn't worry about it now, but I'd like to change these when I rebase the bash branch.
> 
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