boo@ghost:~$ sudo npm install -g grunt
/usr/local/bin/grunt -> /usr/local/lib/node_modules/grunt/bin/grunt
/usr/local/lib
`-- grunt@1.0.1 
  +-- coffee-script@1.10.0 
  +-- dateformat@1.0.12 
  | +-- get-stdin@4.0.1 
  | `-- meow@3.7.0 
  |   +-- camelcase-keys@2.1.0 
  |   | `-- camelcase@2.1.1 
  |   +-- decamelize@1.2.0 
  |   +-- loud-rejection@1.6.0 
  |   | +-- currently-unhandled@0.4.1 
  |   | | `-- array-find-index@1.0.2 
  |   | `-- signal-exit@3.0.2 
  |   +-- map-obj@1.0.1 
  |   +-- minimist@1.2.0 
  |   +-- normalize-package-data@2.4.0 
  |   | +-- hosted-git-info@2.5.0 
  |   | +-- is-builtin-module@1.0.0 
  |   | | `-- builtin-modules@1.1.1 
  |   | +-- semver@5.4.1 
  |   | `-- validate-npm-package-license@3.0.1 
  |   |   +-- spdx-correct@1.0.2 
  |   |   | `-- spdx-license-ids@1.2.2 
  |   |   `-- spdx-expression-parse@1.0.4 
  |   +-- object-assign@4.1.1 
  |   +-- read-pkg-up@1.0.1 
  |   | +-- find-up@1.1.2 
  |   | | +-- path-exists@2.1.0 
  |   | | `-- pinkie-promise@2.0.1 
  |   | |   `-- pinkie@2.0.4 
  |   | `-- read-pkg@1.1.0 
  |   |   +-- load-json-file@1.1.0 
  |   |   | +-- graceful-fs@4.1.11 
  |   |   | +-- parse-json@2.2.0 
  |   |   | | `-- error-ex@1.3.1 
  |   |   | |   `-- is-arrayish@0.2.1 
  |   |   | +-- pify@2.3.0 
  |   |   | `-- strip-bom@2.0.0 
  |   |   |   `-- is-utf8@0.2.1 
  |   |   `-- path-type@1.1.0 
  |   +-- redent@1.0.0 
  |   | +-- indent-string@2.1.0 
  |   | | `-- repeating@2.0.1 
  |   | |   `-- is-finite@1.0.2 
  |   | |     `-- number-is-nan@1.0.1 
  |   | `-- strip-indent@1.0.1 
  |   `-- trim-newlines@1.0.0 
  +-- eventemitter2@0.4.14 
  +-- exit@0.1.2 
  +-- findup-sync@0.3.0 
  | `-- glob@5.0.15 
  +-- glob@7.0.6 
  | +-- fs.realpath@1.0.0 
  | +-- inflight@1.0.6 
  | | `-- wrappy@1.0.2 
  | +-- inherits@2.0.3 
  | `-- once@1.4.0 
  +-- grunt-cli@1.2.0 
  | `-- resolve@1.1.7 
  +-- grunt-known-options@1.1.0 
  +-- grunt-legacy-log@1.0.0 
  | +-- colors@1.1.2 
  | +-- grunt-legacy-log-utils@1.0.0 
  | | +-- chalk@1.1.3 
  | | | +-- ansi-styles@2.2.1 
  | | | +-- escape-string-regexp@1.0.5 
  | | | +-- has-ansi@2.0.0 
  | | | | `-- ansi-regex@2.1.1 
  | | | +-- strip-ansi@3.0.1 
  | | | `-- supports-color@2.0.0 
  | | `-- lodash@4.3.0 
  | +-- hooker@0.2.3 
  | +-- lodash@3.10.1 
  | `-- underscore.string@3.2.3 
  +-- grunt-legacy-util@1.0.0 
  | +-- async@1.5.2 
  | +-- getobject@0.1.0 
  | +-- lodash@4.3.0 
  | `-- which@1.2.14 
  |   `-- isexe@2.0.0 
  +-- iconv-lite@0.4.19 
  +-- js-yaml@3.5.5 
  | +-- argparse@1.0.9 
  | | `-- sprintf-js@1.0.3 
  | `-- esprima@2.7.3 
  +-- minimatch@3.0.4 
  | `-- brace-expansion@1.1.8 
  |   +-- balanced-match@1.0.0 
  |   `-- concat-map@0.0.1 
  +-- nopt@3.0.6 
  | `-- abbrev@1.1.0 
  +-- path-is-absolute@1.0.1 
  `-- rimraf@2.2.8 

boo@ghost:~$ grunt
/usr/bin/env: ‘node’: No such file or directory
boo@ghost:~$