RVM錯誤和解決:"RVM is not a function, selecting rubies with 'rvm use ...' will not work."

ubuntu12

When you run a rvm command such as

$ rvm use 1.9.3
but receive an error message of
RVM is not a function, selecting rubies with 'rvm use ...' will not work.
This error happens because under RVM's installation directory(normally $HOME/.rvm/bin), there is an executable named'rvm'; whereas under $HOME/.rvm/scripts directory, there isa script called 'rvm'.By default, the 'rvm' executable is used,which cannot handle many rvm commands such as 'rvmuse'. 

One should load RVM into a shell session as a function (runthe 'rvm' script). To do that, add thefollowing line to '~/.bash_profile':
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" #load RVM into a shell session as a function



PATH=$PATH:$HOME/.rvm/bin #Add RVM to PATH for scripting
Open a new terminal or run the following command to reload/.bash_profile in the current terminal. The problem should besolved.
$ source ~/.bash_profile

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