Package: rubygem-bundler

"rubygem-bundler" package binaries on CentOS:

/usr/bin/bundle /usr/bin/bundler /usr/lib/ruby/gems/1.8/gems/bundler-1.5.2/bin/bundle /usr/lib/ruby/gems/1.8/gems/bundler-1.5.2/bin/bundler /usr/lib/ruby/gems/1.8/gems/bundler-1.5.2/bin/bundle_ruby /usr/lib/ruby/gems/1.8/gems/bundler-1.5.2/lib/bundler/templates/newgem/bin/newgem.tt

You may install this package on CentOS with yum install rubygem-bundler