/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