Homebrewのダウンロードについて

Question

MacOSX
ver 10.12.1

とても疲れました。笑
前回の質問の投稿でHomebrewがおかしいことが発覚したので再インストールをするつもりでした。
アンインストールコマンドを打った結果

Are you sure you want to uninstall Homebrew? [y/N] ==> Removing Homebrew installation...
==> Removing empty directories...
==> /usr/bin/sudo /usr/bin/find /usr/local/Cellar /usr/local/Homebrew /usr/local/Frameworks /usr/local/bin /usr/local/etc /usr/local/include /usr/local/lib /usr/local/opt /usr/local/sbin /usr/local/share /usr/local/var -name .DS_Store -delete
Password:
==> /usr/bin/sudo /usr/bin/find /usr/local/Cellar /usr/local/Homebrew /usr/local/Frameworks /usr/local/bin /usr/local/etc /usr/local/include /usr/local/lib /usr/local/opt /usr/local/sbin /usr/local/share /usr/local/var -depth -type d -empty -exec rmdir {} ;
==> Homebrew uninstalled!
The following possible Homebrew files were not deleted:
/usr/local/.git/
/usr/local/.github/
/usr/local/.gitignore
/usr/local/.travis.yml
/usr/local/.yardopts
/usr/local/bin/
/usr/local/CODEOFCONDUCT.md
/usr/local/etc/
/usr/local/Homebrew/
/usr/local/lib/
/usr/local/Library/
/usr/local/LICENSE.txt
/usr/local/README.md
/usr/local/share/
/usr/local/shere/
/usr/local/var/
You may wish to remove them yourself.
-e:312:in `<main>': undefined local variable or method `usr' for main:Object (NameError)

と表示されインストールコマンドを打つと

remote: Total 0 (delta 0), reused 0 (delta 0), pack-reused 0
HEAD is now at 63b2eb9 Merge pull request #2698 from reitermarkus/operator-style
/usr/local/Homebrew/Library/Homebrew/PATH.rb:71:in `split': invalid byte sequence in UTF-8 (ArgumentError)
	from /usr/local/Homebrew/Library/Homebrew/PATH.rb:71:in `block in parse'
	from /usr/local/Homebrew/Library/Homebrew/PATH.rb:71:in `each'
	from /usr/local/Homebrew/Library/Homebrew/PATH.rb:71:in `flat_map'
	from /usr/local/Homebrew/Library/Homebrew/PATH.rb:71:in `parse'
	from /usr/local/Homebrew/Library/Homebrew/PATH.rb:8:in `initialize'
	from /usr/local/Homebrew/Library/Homebrew/utils.rb:310:in `new'
	from /usr/local/Homebrew/Library/Homebrew/utils.rb:310:in `which_all'
	from /usr/local/Homebrew/Library/Homebrew/gpg.rb:5:in `find_gpg'
	from /usr/local/Homebrew/Library/Homebrew/gpg.rb:20:in `gpg2'
	from /usr/local/Homebrew/Library/Homebrew/gpg.rb:23:in `<class:Gpg>'
	from /usr/local/Homebrew/Library/Homebrew/gpg.rb:3:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/requirements/gpg2_requirement.rb:2:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/requirements.rb:3:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/dependency_collector.rb:5:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/software_spec.rb:7:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/formula.rb:10:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/readall.rb:1:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/tap.rb:2:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/compat/tap.rb:1:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/compat.rb:2:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/global.rb:56:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/brew.rb:14:in `<main>'
Failed during: /usr/local/bin/brew update --force
pck14044kk:~ k14044kk$ brew update --force
/usr/local/Homebrew/Library/Homebrew/PATH.rb:71:in `split': invalid byte sequence in UTF-8 (ArgumentError)
	from /usr/local/Homebrew/Library/Homebrew/PATH.rb:71:in `block in parse'
	from /usr/local/Homebrew/Library/Homebrew/PATH.rb:71:in `each'
	from /usr/local/Homebrew/Library/Homebrew/PATH.rb:71:in `flat_map'
	from /usr/local/Homebrew/Library/Homebrew/PATH.rb:71:in `parse'
	from /usr/local/Homebrew/Library/Homebrew/PATH.rb:8:in `initialize'
	from /usr/local/Homebrew/Library/Homebrew/utils.rb:310:in `new'
	from /usr/local/Homebrew/Library/Homebrew/utils.rb:310:in `which_all'
	from /usr/local/Homebrew/Library/Homebrew/gpg.rb:5:in `find_gpg'
	from /usr/local/Homebrew/Library/Homebrew/gpg.rb:20:in `gpg2'
	from /usr/local/Homebrew/Library/Homebrew/gpg.rb:23:in `<class:Gpg>'
	from /usr/local/Homebrew/Library/Homebrew/gpg.rb:3:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/requirements/gpg2_requirement.rb:2:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/requirements.rb:3:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/dependency_collector.rb:5:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/software_spec.rb:7:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/formula.rb:10:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/readall.rb:1:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/tap.rb:2:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/compat/tap.rb:1:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/compat.rb:2:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/global.rb:56:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/local/Homebrew/Library/Homebrew/brew.rb:14:in `<main>'

再びアンインストールコマンドを打つと

/Users/k14044kk/.rbenv/shims/ruby: line 21: /usr/local/Cellar/rbenv/1.1.0/libexec/rbenv: No such file or directory

アンインストールもインストールもできない状況です。助けてください。

Answer 1

brew upgrade --cleanup で解決しませんか？