Error installing RVM: requiring BASH 3.2.25 (you have 4.3.42(4)-release) - ruby-on-rails

Question

I'm attempting to install RVM, and I have a more recent version of BASH. I assume that it needs a version that is 3.2.25 or more recent. I've seen a few post online about it, but they've all been dated or no longer relevant to the current code. Here is what I put in cmd (I have Windows 10 pro).
curl -L https://get.rvm.io | bash -s stable --autolibs=enabled --ruby --rails
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 184 100 184 0 0 143 0 0:00:01 0:00:01 --:--:-- 155
100 22865 100 22865 0 0 9566 0 0:00:02 0:00:02 --:--:-- 45730
Input file specified two times.
BASH 3.2.25 required (you have 4.3.42(4)-release)

Answer 1

The error "Input file specified two times," displayed when the check was run, is output from the Windows sort command. If you run this command it will show you which instance of the sort command is being run:
which sort
To ensure the correct version is always used, alter your PATH to include the typical Bash executable paths (/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin) before any Windows ones. Or, simply remove the Windows paths from your PATH.
Where you change this depends on how you've installed Bash (Cygwin, git-bash, etc.) but is typically a file in your home directory called .profile or .bash_profile.

Answer 2

My problem is ~/.bash_profile,
Because your head is wrong.
If you are using:
export PATH=some/other/path:${PATH}
Let's change to:
export PATH=${PATH}:some/other/path
Hope this help!