Screwed up my Terminal [and/or XCode] trying to setup Dev Environment


NKunkel

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So I'm trying to set up a developer environment for Ruby on Rails on my Macbook Pro running Lion 10.7.3.

Following this guide: How to install Xcode, Homebrew, Git, RVM, & Ruby 1.9.3 on Snow Leopard & Lion - Moncef Belyamani

I went to the Mac Store and installed XCode, as the Command Line Tools. I installed gcc and homebrew through the command prompt as instructed, however this is where I started running into problems.

When I ran brew doctor to check if my system was "raring to brew" i got this output:


Code:
Warning: Your Xcode is configured with an invalid path.
You should change it to the correct path. Please note that there is no correct
path at this time if you have *only* installed the Command Line Tools for Xcode.
If your Xcode is pre-4.3 or you installed the whole of Xcode 4.3 then one of
these is (probably) what you want:

    sudo xcode-select -switch /Developer
    sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

DO NOT SET / OR EVERYTHING BREAKS!
Beeing a fool, I selected the first option and submitted
Code:
sudo xcode-select -switch /Developer
and moments later realized the tutorial said to submit the second option
Code:
sudo xcode-select -switch/Applications/Xcode.app/Contents/Developer
Now, no matter what I enter into the terminal I always get the following:

-bash: install: command not found
-bash: ruby: command not found
-bash: sudo: command not found

So for example if I call up "brew doctor" on terminal it will say that my Xcode is configured with an invalid path and try to resubmit the second code: "sudo xcode-select -switch/Applications/Xcode.app/Contents/Developer" it still says "-bash: sudo: command not found"

Also this may be helpful in diagnosing the problem as I suspect it's where things went wrong.

Code:
Niklas-Kunkels-MacBook-Pro:~ Niklas$ echo $PATH
/usr/local/bin:/usr/local/sbin:~/bin:/usr/local/bin:/usr/local/sbin:~/bin/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin
I've been told to delete a bunch of plist files that bash loads whenever you open a new terminal session, however am having trouble finding them.
 
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