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 f
For a long-term solution, you should add this to your ~/.profile file:
~/.profile
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"
to simply load rvm into a single terminal, use
source "$HOME/.rvm/scripts/rvm"
supposedly this call is more cross-platform:
. "$HOME/.rvm/scripts/rvm"