Ruby version switching with rbenv


macOS Catalina 10.15.4 rbenv ruby 2.6.3p62 (2019-04-16 revision 67580) [universal.x86_64-darwin19]

I wanted to use a newer version than the currently installed Ruby version, so switch the version with rbenv.

//Although it is written in the rbenv head family, it needs to be initialized. Bash to finish at login_Write in profile
$ echo 'eval "$(rbenv init -)"' >> ~/.bash_profile

//When you install rbenv, ruby-I think build was installed by dependency resolution, but I specified it just in case
$ brew install rbenv ruby-build

//List of installable versions
$ rbenv install -l

// install
$ rbenv install 2.7.1

//At this time, ruby's PATH via rbenv refers to the previous one. So the version at this point is 2.6.3
$ rbenv which ruby

//Those who are not rbenv ruby are looking at rbenv ruby properly
$ which ruby

//When reflecting in local (current directory)
$ rbenv local 2.7.1

//Reflected in shims
$ rbenv rehash

$ rbenv which ruby

that's all

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