gistfile1.txt

rails gives an error about railties, 

In an attempt to uninstall and reinstall rails, I tried gem uninstall rails and nothing happened.

$ rails
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/rubygems/dependency.rb:319:in `to_specs': Could not find 'railties' (>= 0.a) among 18 total gem(s) (Gem::LoadError)

Checked in 'GEM_PATH=/Users/apple/.gem/ruby/2.3.0:/Library/Ruby/Gems/2.3.0:/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/gems/2.3.0', execute `gem env` for more information
	from /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/rubygems/dependency.rb:328:in `to_spec'
	from /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_gem.rb:65:in `gem'
	from /usr/local/bin/rails:25:in `<main>'

From what I remember of how I got into that situation, rails was working ok, but I had an issue that arrow keys weren't working in irb. They were showing ^A , ^D, ^B, ^C 

I managed to fix that by doing a command- brew upgrade.  And I did brew install ruby, which told me to do brew reinstall ruby and i did that, and it told me to set the PATH . PATH="/usr/local/opt/ruby/bin:$PATH" . so I did that. 

But I still get an error about railties

$ PATH="/usr/local/opt/ruby/bin:$PATH"

$ echo $PATH
/usr/local/opt/ruby/bin:/opt/local/bin:/opt/local/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:~/rubymac/rubyrailshelperscripts:/opt/X11/bin:/Users/apple/.vimpkg/bin

$ rails
Traceback (most recent call last):
	2: from /usr/local/bin/rails:23:in `<main>'
	1: from /usr/local/Cellar/ruby/2.6.3/lib/ruby/2.6.0/rubygems.rb:302:in `activate_bin_path'
/usr/local/Cellar/ruby/2.6.3/lib/ruby/2.6.0/rubygems.rb:283:in `find_spec_for_exe': can't find gem railties (>= 0.a) with executable rails (Gem::GemNotFoundException)

I just tried gem uninstall rails, having made sure the path was updated

and I get this

~/rubymac$ gem uninstall rails
Successfully uninstalled rails-5.2.3

~/rubymac$ rails
Usage:
  rails new APP_PATH [options]

So this is just an evolving mess..

rails<ENTER> gives no error now, rails seems installed.. but the gem command thinks rails is uninstalled

If I do rails new asdfj . then I get
/usr/local/Cellar/ruby/2.6.3/lib/ruby/2.6.0/rubygems.rb:283:in `find_spec_for_exe': Could not find 'bundler' (1.17.2) required by your /Users/apple/rubymac/asdfj/Gemfile.lock. (Gem::GemNotFoundException)

To update to the latest version installed on your system, run `bundle update --bundler`.

To install the missing version, run `gem install bundler:1.17.2`

I also have two versions of Ruby, which I don't want, I only want one.

~$ cd /usr/local/opt/ruby/bin
/usr/local/opt/ruby/bin$ ls
bundle	bundler	erb	gem	irb	rake	rdoc	ri	ruby

/usr/local/opt/ruby/bin$ echo $PATH
/opt/local/bin:/opt/local/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:~/rubymac/rubyrailshelperscripts:/opt/X11/bin:/Users/apple/.vimpkg/bin:/usr/local/opt/fzf/bin

/usr/local/opt/ruby/bin$ which gem
/usr/bin/gem

/usr/local/opt/ruby/bin$ cd ~/
~$ /usr/local/opt/ruby/bin/ruby --version
ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-darwin16]

~$ /usr/bin/ru
ruby      runocc.d  

~$ /usr/bin/ruby --version
ruby 2.3.7p456 (2018-03-28 revision 63024) [universal.x86_64-darwin16]
~$ rails