$ gem install knife-solo
Fetching: knife-solo-0.4.2.gem (100%)
Thanks for installing knife-solo!

If you run into any issues please let us know at:
  https://github.com/matschaffer/knife-solo/issues

If you are upgrading knife-solo please uninstall any old versions by
running `gem clean knife-solo` to avoid any errors.

See http://bit.ly/CHEF-3255 for more information on the knife bug
that causes this.
Successfully installed knife-solo-0.4.2
1 gem installed
Installing ri documentation for knife-solo-0.4.2...
Installing RDoc documentation for knife-solo-0.4.2...

$ curl -L http://www.opscode.com/chef/install.sh | sudo bash
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
 48 16514   48  8001    0     0   6550      0  0:00:02  0:00:01  0:00:01  8687Downloading Chef  for el...
100 16514  100 16514    0     0   9853      0  0:00:01  0:00:01 --:--:-- 12010
downloading http://www.opscode.com/chef/metadata?v=&prerelease=false&nightlies=false&p=el&pv=6&m=i686
  to file /tmp/install.sh.1845/metadata.txt
trying curl...
url     http://opscode-omnibus-packages.s3.amazonaws.com/el/6/i686/chef-11.16.4-1.el6.i686.rpm
md5     da7bbe41d9510de62adf6afe89ed2ecd
sha256  545075be04de512c780c961b3aa3809c4540fd68c47c167eced67a8daa0821b7
downloaded metadata file looks valid...
downloading http://opscode-omnibus-packages.s3.amazonaws.com/el/6/i686/chef-11.16.4-1.el6.i686.rpm
  to file /tmp/install.sh.1845/chef-11.16.4-1.el6.i686.rpm
trying curl...
Comparing checksum with sha256sum...
Installing Chef
installing with rpm...
warning: /tmp/install.sh.1845/chef-11.16.4-1.el6.i686.rpm: Header V4 DSA/SHA1 Signature, key ID 83ef826a: NOKEY
Preparing...                ########################################### [100%]
   1:chef                   ########################################### [100%]
Thank you for installing Chef!

$ echo 'export PATH="/opt/chef/embedded/bin:$PATH"' >> ~/.bash_profile
$ source ~/.bash_profile