在Windows系统中自动安装Ruby环境的批处理

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@echo This batch will install Ruby 3.1.2 almost automatically.
ruby.exe -v
@if errorlevel 1 goto :skip
@echo Ruby had installed.
@echo If the version of Ruby is lower than 3.1, please uninstall the old Ruby.
@echo Then you can run this batch to install 3.1.2.
@goto :wait
:skip
chdir %HOMEDRIVE%%HOMEPATH%
curl.exe -o install_ruby.exe https://s3.jcloud.sjtu.edu.cn/899a892efef34b1b944a19981040f55b-oss01/github-release/oneclick/rubyinstaller2/releases/download/RubyInstaller-3.1.2-1/rubyinstaller-devkit-3.1.2-1-x64.exe
@if errorlevel 1 goto :error1
install_ruby.exe /verysilent /dir=C:\Ruby /tasks="modpath,assocfiles,ridkinstall,defaultutf8"
@if errorlevel 1 goto :error2
if not exist C:\Ru mkdir C:\Ru
@if errorlevel 1 goto :error3
setx.exe RUBYLIB C:\Ru
@if errorlevel 1 goto :error4
setx.exe PATH "%PATH%;C:\Ru"
@if errorlevel 1 goto :error4
@goto :wait
:error1
@echo Download Ruby install package fail.
@goto :wait
:error2
@echo Run Ruby install package fail.
@goto :wait
:error3
@echo Make Ruby library directory fail.
@goto :wait
:error4
@echo Set user environment variable fail.
@goto :wait
:wait
@pause