postmodern/chruby

Health v2 · maintenance only

Adoption not part of the score

2912 stars · 183 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

chruby is a minimal shell script (~100 LOC) for switching between installed Ruby versions in bash and zsh. It updates PATH, GEM_HOME, and related environment variables, with optional auto-switching via .ruby-version files.

Use cases

• switch between multiple ruby versions on my machine
• set ruby version per project with .ruby-version file
• avoid rbenv shims and just change PATH for ruby
• manage GEM_HOME and GEM_PATH when switching rubies
• fuzzy match and select an installed ruby by name
• use jruby or rubinius alongside MRI ruby

When to choose

• you want a tiny, simple Ruby version switcher without shims or cd hooks
• you use bash or zsh and manage Rubies yourself (e.g. with ruby-install)
• you prefer minimal tooling with no daemon or regeneration steps

When to avoid

• you need automatic Ruby installation - use ruby-install, rvm, or asdf alongside it
• you need per-project auto-switching enabled by default without extra setup
• you don't use bash or zsh

Facets

cli-tool · maturity stable

developer-tools cli configuration-management developer-tools programming-languages cli cross-platform ruby version-manager shell bash zsh environment-management command-line linux macos

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