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The Best Way To Learn Ruby
How to Install Ruby on Mac OS X with RVM. This article explains why you should avoid using the version of Ruby bundled with Mac OS X and should instead install your own version of Ruby with RVM, the Ruby Version Manager. Hands Off the System Ruby. Apple bundles the Ruby programming language with OS X. However, the main caveat for using the. At this point you should be able to type ruby -v inside this window & get the current version of Ruby printed in there. Ruby Setup For Linux & Mac Users. If you are on Linux or MacOS then you probably already have Ruby installed. You can confirm this by opening a terminal (search for “terminal” in your menu), then typing ruby -v.
If you have decided to learn Ruby & become a Ruby developer then you’re in the right place.
You’ve a lot of learning ahead of you, but don’t let that stop you from getting started.
Learning is a beautiful thing.
Now:
Where do you begin?
You should start by learning the core programming concepts.
Things like:
- Variables
- Data structures
- Conditional statements
You’ll find a lot of new words in your journey, don’t worry about that, you’ll learn along the way.
You also need to understand that a programming language is a formal language.
What does that mean?
In English, if I make a grammar mistake there is a pretty good chance you can still understand me.
But if you make that kind mistake in Ruby, or any other programming language, you’re going to get an error.
You’ve to understand the rules of the language, then apply them correctly.
I’m telling you this is because I don’t want you to give up early if you’re seeing a lot of error messages & if things don’t make a lot of sense.
These things are normal:
You are learning something new & it’s going to take some time until it starts to sink in.
Office 365 license removal tool. One of the keys is repetition.
Work on every topic until you understand how it’s useful in the big picture, how to use it, how to explain it to other people.
This Ruby tutorial helps you learn step-by-step, so don’t skip steps. Invest as much time as you need, have patience.
You can do this!
Let’s get started with the first step…
How to Download & Install Ruby
If you are using Windows you want to go to this site to download Ruby:
You want the recommended version (it’s in bold text), which at the time of this writing is
Ruby+Devkit 2.6.5-1 (x64)
.Just download & install it like any other program.
If no errors appear then you have Ruby installed on your computer!
Now to start writing your Ruby programs you will need to open a terminal.
To do that open the windows menu & type
cmd.exe
.Then press enter.
It will look something like this:
At this point you should be able to type
ruby -v
inside this window & get the current version of Ruby printed in there.![Ruby for rails machine Ruby for rails machine](/uploads/1/2/9/2/129215934/360135934.png)
Ruby Setup For Linux & Mac Users
If you are on Linux or MacOS then you probably already have Ruby installed.
You can confirm this by opening a terminal (search for “terminal” in your menu), then typing
ruby -v
.This should print your Ruby version.
Like this:
If you don’t get a Ruby version then refer to this site for more details on how to install Ruby for your particular Linux version or Mac.
Let’s Write Some Code!
Now that you are set up, I want you to open
irb
.Ruby For Rails Mac X
This is a Ruby program that allows you to type Ruby code & see the results right away.
It’s a great way to practice & learn about Ruby.
To open
irb
you have to type the word irb inside that black terminal window I had you open before.Press enter.
Then you should see something like this:
Start by typing this into
irb
:Then press enter.
You’ll see the result of this operation.
“But I can do that with a calculator program!”
Of course.
The point of this is to get you used to typing inside the terminal window.
And you’re going to be using numbers a lot inside your Ruby programs:
- As data (price, age, year, etc.)
- To count things
- To access information
We’re just getting started here, so don’t worry if this seems too simple.
Other Ways to Run Ruby Code
Besides using a program like irb, you can run Ruby code in other ways.
For example, you can save the code inside a file ending in
.rb
, then use the ruby
command + the file name.Like this:
![Install ruby on rails mac Install ruby on rails mac](/uploads/1/2/9/2/129215934/895023742.png)
Notice that this has to be done inside one of those terminal windows where you can type commands, while you AREN’T running
irb
. You know you are are inside irb or not because it says “irb” inside the terminal window.Now it’s time to practice!
Ruby On Rails For Mac
Only reading this is not enough, you don’t become a great pianist by only reading books about music, you have to actually play the piano.
Elevator controller manual. Same thing applies for any other skill.
Now.
Try these math operations:
Feel free to play around with your own ideas, and don’t worry if you see an error message or two.
There is A LOT of learning ahead & things will become more clear over time.
Remember:
Ruby Rails Mac
It takes time & effort to develop a new skill!
Also I want you to close your terminal window, open it again, open
irb
& type more math.Do that a few times so you’ll remember how to do it the next time.
I’m running Mac OSX 10.6.4 and Ruby on Rails is already installed natively on the machine. I believe most if not all versions of the Mac OS include Rails. To locate it all you have to do is launch the Terminal which can be found in Applications > Utilities > Terminal using a finder window.
Just launch Terminal and type in rails to confirm that the app exists and get a path printed to where it is. For me the path is /usr/bin/rails and a whole list of Options is also printed out. Now, you don’t actually have to launch rails by navigating that path, you can use it straight from the Terminal with the following commands.
- pwd (print working directory)
- cd (change directory)
- ls (list) ls -F (shows type)
- mkdir (make directory, folder)
- rm (remove)
- rmdir “name of directory” (removes dir)
- which “command”
- man “command” (print out manual page)
- cat “file” (prints out a file)
- more “file” (stops it page by page)
- rm -rf “name” (remove directory)
- Ctrl+c breaks out
I started out by typing pwd to print the directory I was in (which turned out to be “Home$” now in your case this might be your name since that is the default that Mac OSX usually names it when you setup your computer. My next command was mkdir Rails which created a new folder called /Rails in my Home directory. I then typed cd Rails to get into the new directory and then typed rails test (test is the name of the new folder that rails will create in the folder Rails).
At this point a whole bunch of lines will print as rails installs all of the components for a new site in the /test folder. That’s exactly what is shown in the image just below.
Install Ruby On Rails Mac
Next you can use the change directory command “cd” to get into the test folder you just created with the rails function. Type cd test and then confirm your location by typing pwd. Next you can tell ruby to create a scaffold which actually creates strings and CRUD (create read update and delete) functions. Here is an example: ruby script/generate scaffold test name:string address:text email:string price:decimal
Ruby Rails Macros
You just created four variables name, address, email and price! Next setup the database by typing rake db:migrate and then launch the local test server by typing ruby script/server. At this point you can launch an internet browser such as FireFox or Safari and type http://localhost:3000/test to see the basic functions and site you created. To edit any of this contents HTML just go to the Rails/test folder and click into public to see html, javascripts and stylesheets.
That’s it, just a basic intro to Ruby here but hopefully it helps anyone who is on a Mac get started or remember some of the basic commands. I recommend checking out the book Head First Rails by David Griffiths for more information.
One last thing worth mentioning, if you launch the server by typing ruby script/server and then try to generate your scaffold or setup the database it won’t work. You have to stop the server first by pressing control+c to break out. You can always start the server again later with the ruby script/server command.