npm@latest

vagrant@precise32:~/app$ sudo npm install -g npm@latest
npm ERR! error rolling back Error: Refusing to delete: /usr/local/bin/npm not in
 /usr/local/lib/node_modules/npm
npm ERR! error rolling back     at clobberFail (/opt/node-v0.10.29-linux-x86/lib
/node_modules/npm/lib/utils/gently-rm.js:57:12)
npm ERR! error rolling back     at next (/opt/node-v0.10.29-linux-x86/lib/node_m
odules/npm/lib/utils/gently-rm.js:43:14)
vagrant@precise32:~/app$ sudo npm install -g npm@latest
npm ERR! error rolling back Error: Refusing to delete: /usr/local/bin/npm not in
 /usr/local/lib/node_modules/npm
npm ERR! error rolling back     at clobberFail (/opt/node-v0.10.29-linux-x86/lib
/node_modules/npm/lib/utils/gently-rm.js:57:12)
npm ERR! error rolling back     at next (/opt/node-v0.10.29-linux-x86/lib/node_m
odules/npm/lib/utils/gently-rm.js:43:14)
npm ERR! error rolling back     at /opt/node-v0.10.29-linux-x86/lib/node_modules
/npm/lib/utils/gently-rm.js:52:12
npm ERR! error rolling back     at Object.oncomplete (fs.js:107:15)
npm ERR! error rolling back  npm@2.1.6 { [Error: Refusing to delete: /usr/local/
bin/npm not in /usr/local/lib/node_modules/npm] code: 'EEXIST', path: '/usr/loca
l/bin/npm' }
npm ERR! Refusing to delete: /usr/local/bin/npm not in /usr/local/lib/node_modul
es/npm
File exists: /usr/local/bin/npm
Move it away, and try again.

npm ERR! System Linux 3.2.0-23-generic-pae
npm ERR! command "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g" "npm@
latest"
npm ERR! cwd /home/vagrant/app
npm ERR! node -v v0.10.29
npm ERR! npm -v 1.4.14
npm ERR! path /usr/local/bin/npm
npm ERR! code EEXIST
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR!     /home/vagrant/app/npm-debug.log
npm ERR! not ok code 0