ruby的修改版

Changes the current Ruby.

Features

• Updates $PATH.
  • Also adds RubyGems bin/ directories to $PATH.
• Correctly sets $GEM_HOME and $GEM_PATH.
  • Users: gems are installed into ~/.gem/$ruby/$version.
  • Root: gems are installed directly into /path/to/$ruby/$gemdir.
• Additionally sets $RUBY_ROOT, $RUBY_ENGINE, $RUBY_VERSION and $GEM_ROOT.
• Optionally sets $RUBYOPT if second argument is given.
• Calls hash -r to clear the command-lookup hash-table.
• Fuzzy matching of Rubies by name.
• Defaults to the system Ruby.
• Optionally supports auto-switching and the .ruby-version file.
• Supports bash and zsh.
• Small (~90 LOC).
• Has tests.

Anti-Features

• Does not hook cd.
• Does not install executable shims.
• Does not require Rubies be installed into your home directory.
• Does not automatically switch Rubies by default.
• Does not require write-access to the Ruby directory in order to install gems.

Install

wget -O chruby-0.3.8.tar.gz https://github.com/postmodern/chruby/archive/v0.3.8.tar.gz
tar -xzvf chruby-0.3.8.tar.gz
cd chruby-0.3.8/
sudo make install

PGP

All releases are PGP signed for security. Instructions on how to import my PGP key can be found on my blog. To verify that a release was not tampered with:

wget https://raw.github.com/postmodern/chruby/master/pkg/chruby-0.3.8.tar.gz.asc
gpg --verify chruby-0.3.8.tar.gz.asc chruby-0.3.8.tar.gz

setup.sh

chruby also includes a setup.sh script, which installs chruby and the latest releases of Ruby, JRuby and Rubinius. Simply run the script as root or via sudo:

sudo ./scripts/setup.sh 

from https://github.com/postmodern/chruby