rvm: command not found MAC OX

Really, I don't know what happened. Excuse me if this question is so NOOB, but I can't find the solution for this problem.

-bash: rvm: command not found

I tried this

curl -L https://get.rvm.io | bash -s -- --version latest

but still nothing I need to see the ruby version for use the simplecov because it not works with older version from 1.9

It might because the terminal not having rvm shell configuration loaded.

Try following from your terminal:

$ source ~/.rvm/scripts/rvm

then

$ type rvm | head -n 1

If the output is:

rvm is a function

You may need to add "source ~/.rvm/scripts/rvm" to your ~/.bash_profile file

you need to read all the texts that are displayed when you install RVM:

rm -rf ~/.rvm
curl -L https://get.rvm.io | bash -s stable

after you run sudo curl -L https://get.rvm.io | bash -s stable --ruby

you need to close the terminal ,then open again!