I was reading the answer here: How to change rvm install location
it keeps referencing the below variable:
"${rvm_path-$HOME/.rvm}/scripts/rvm"
I know that I have $rvm_path and $HOME set, but I don't understand what the whole excerpt means.
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See http://wiki.bash-hackers.org/syntax/pe – Charles Duffy May 11 '16 at 17:32
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This is a parameter expansion.
If a variable named rvm_path exists, it is expanded. Otherwise, $HOME/.rvm is used instead. Regardless, /scripts/rvm is appended to the result.
Charles Duffy
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