Trying to Install RVM 1.8.7

I am trying to install rvm 1.8.7. The command I am trying to use is: rvm install 1.8.7.

I receive thi开发者_高级运维s error: rvm: command not found

I am new to system configuration and rvm, can anyone point me in the right direction?

I am using Mac OSX 10.7 (Lion)

I have not installed rvm previously.

If you don't have rvm on your system, then follow the instructions here: Installing RVM. Basically, you have to download a shell script that will does the job for you (fetch the latest release and install it). Then, just add

[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"                 

in your .profile, .bash_profile, or whatever you use.

If you have installed rvm already then the problem is that you don't have the path to rvm in your PATH envvar. Include the following in your .bash_profile file:

export PATH=$PATH:/path/to/rvm/bin/directory