This is a continuation of my post on installing Ruby version manager or multiple versions of Ruby for Unix. This time it's about OS X 10.6.1 or the Snow Leopard.

Snow Leopard includes Ruby and Rails by default if you install XCode. The version is 1.8.7 and 2.2.2 for each, respectively. This would not suffice for most developers because we need to start porting to Ruby 1.9 and start experimenting with Rails 3. The goal is to just keep moving forward and use the best version that exists.

Update: Since I am getting a lot of feedback regarding this post. I noticed it's not newbie-friendly. Sorry. Here are the missing steps.

My Apache2 is installed in /usr/local and PHP5 is compiled by source. I do not use what Leopard has by default because it wasn't working well for me.

In case it happens for you and you want to install PHP5 and more modules. See the following guides:

I also installed Fink

So at the very least, you can skip reading what's written on the links above if your Apache2 installed is OK.

Install WGET (but you can also use curl) or just download via web browser.

tar -xzvf wget-latest.tar.gz
cd wget-*
sudo make install

Install Readline

tar -xvzf readline-6.1.tar.gz
cd readline-6.1
sudo make install

Install Most

tar xvzf most-5.0.0.tar.gz
cd most-5.0.0
sudo make install

RVM installation for OS X.

Please read the guides on the website of Wayne. Click here to go there.

Note: The path "/usr/local" is important. This makes a bit of a difference between installing on Ubuntu/Debian and OS X.

Update: I recommend you install RVM this way

bash < <( curl )
rvm install 1.8.7 -C --enable-shared,--with-readline-dir=/usr/local
rvm install 1.9.2 -C --enable-shared,--with-readline-dir=/usr/local
rvm 1.8.7 --default

But this will also work:

rvm install 1.8.7
rvm install 1.9.2 
rvm 1.9.2 --default

Install Prerequisites


Hivelogic tutorials are good. Check out how to install Git on Leopard.

SQLite 3

tar xvzf sqlite-amalgamation-3070400.tar.gz
cd sqlite-3.6.22/
sudo make install


Download from MYSQL website

Select the version compatible with your Mac.

sudo /Library/StartupItems/MySQLCOM/MySQLCOM start

Install Rails 3.0.3 for Ruby 1.9.2

rvm use 1.9.2
#install bundler so you could just specify dependencies on Gem and do bundle install
gem install bundler  
gem install rails 

And all this didn't take time for me even while writing this post. I now have a successful install for Rails 3. Same result with Ubuntu Karmic Koala.

rails new yourawesomeapp -d mysql 

I suggest replacing the .gitignore file immediately with the .gitignore you've been using or add those necessary entries.

An example of a complete .gitignore file is here.

But often this is just what you need:

backups/* #[I keep some files relevant to the application like the database dump on the same folder] 
log/* #[we don't need the the log files submitted

Keep adding in other entries later.


Some guides out there are wrong. Do not use "sudo" when you are using RVM. Your gems are on your user's home directory.

If things are not working and you have followed installation guides. You're missing an important part which is called the .bash_profile. Please review your .bash_profile first. I can't explain every line but every line is important.

This is what I have right now:

Katherine-Pes-iMac:~ katz$ cat .bash_profile

export PATH=/usr/local/bin/:/usr/local/sbin/:/opt/local/bin/:/opt/local/sbin/
export PATH="/usr/local/bin:/usr/local/sbin:

export APACHE2="/usr/local/apache2/bin"
export PATH="${APACHE2}:${PATH}"

export EDITOR='mate -w'
export CLICOLOR=1

export LSCOLORS=ExFxCxDxBxegedabagacad
export PAGER=most

if [[ -s /Users/katz/.rvm/scripts/rvm ]] ; then source /Users/katz/.rvm/scripts/rvm ; fi

alias start_mysql="/Library/StartupItems/MySQLCOM/MySQLCOM start"
alias stop_mysql="/Library/StartupItems/MySQLCOM/MySQLCOM stop"

. /sw/bin/

function gemdir {
if [[ -z "$1" ]] ; then
echo "gemdir expects a parameter, which should be a valid rvm Ruby selector"
rvm "$1"
cd `rvm gemdir`

As you can see, there's RVM code. If you follow RVM installation properly you should have something like that. Aliases are shortcuts for starting/stopping MYSQL but mine is automatically loaded on startup.

Have fun :)

Last Updated: January 20, 2011

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Hello! I am Kat. I've been a developer for several years. When I'm not sitting down, reading and working for long hours, I am traveling to some place of interest.
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