Commands not found missing in terminal on my Mac? - ruby-on-rails

Question

My system was fine, but today, after installing MySQL server, I can't use the terminal to program my Rails application.
When I open a terminal session, I see:
Last login: Sun Dec 8 13:31:06 on console
-bash: [: missing `]'
-bash: rt: command not found
I tried searching for this error but can't find a solution.
I am running Mac 10.7 OS X.
No commands pertaining to Ruby on Rails are found.
I built an application and installed Rails, but when I run a Rails command I get:
Rails is not currently installed on this system. To get the latest version, simply type:
$ sudo gem install rails
You can then rerun your "rails" command.
How do I fix this?
My bashrc file contains only one line:
PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting
My bash profile contains following:
export PATH=$PATH:/usr/local/mysql/bin
[ [-s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*
rt PATH=$PATH:/usr/local/mysql/bin
I checked history and this is what I ran
vi .bash_profile
vi .bash_profile
user#computer:$ mysql -u root
mysql -u root
vi .bash_profile
mysql -u root
/usr/local/mysql-5.6.15-osx10.7-x86_64/bin/mysqld_safe ; exit;
mysql
What else can I show to help with this problem?

Answer 1

Your .bash_profile is messed up. Modify what looks like this:
[ [-s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*
rt PATH=$PATH:/usr/local/mysql/bin
To look like this:
[[-s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*
export PATH=$PATH:/usr/local/mysql/bin
As #TinMan pointed out, you'll want to remove the export PATH line from your .bashrc file.

Answer 2

I had a similar problem (although I'm running Ubuntu). When I opened a new terminal and navigated to my project root, I was surprised to find that Rails was not recognized as a program. I checked the version of Ruby and noted that there was a discrepancy between the two terminals I had open. When I tried to switch Ruby versions with RVM, I was told
You need to change your terminal emulator preferences to allow login shell.
Sometimes it is required to use `/bin/bash --login` as the command.
so I ran /bin/bash --login. Then, I was able to switch to Ruby 2.1.1 with RVM use ruby-2.1.1 and all my rails commands worked again.
Basically what happened is that RVM only installs gems locally for each Ruby verison. Unless you select the version of Ruby that you were using when you installed the gem, you won't be able to use the gem unless you reinstall it.

Answer 3

I came to this page after receiving this error with a slightly different cause. While the CDub's answer is directly applicable to OP's question, I would generally recommend users of Mac OS X Terminal who have this error to do the following:
Open ~/.bash_profile in a text editor.
Look for any instances of "rt" at the beginning of a line.
Change all instances to "export".
It looks like some packages out there are writing a command into ~/.bash_profile that Mac OS X does not like, and we need to manually correct this.
For reference, I am on OS 10.10.2.