Bowerのインストールで「Error: EACCES〜」が発生した場合の対処 ref: http://qiita.com/jacoyutorius/items/e73355711e36a1c864df

file0.txt

# yuto-ogi [11:53:22]
$ npm install bower -g
npm ERR! Darwin 14.0.0
npm ERR! argv "node" "/usr/local/bin/npm" "install" "bower" "-g"
npm ERR! node v0.10.36
npm ERR! npm  v2.3.0
npm ERR! path /Users/yuto-ogi/.npm/graceful-fs/3.0.5
npm ERR! code EACCES
npm ERR! errno 3

npm ERR! Error: EACCES, mkdir '/Users/yuto-ogi/.npm/graceful-fs/3.0.5'
npm ERR!  { [Error: EACCES, mkdir '/Users/yuto-ogi/.npm/graceful-fs/3.0.5']
npm ERR!   errno: 3,
npm ERR!   code: 'EACCES',
npm ERR!   path: '/Users/yuto-ogi/.npm/graceful-fs/3.0.5',
npm ERR!   parent: 'bower' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/yuto-ogi/Dropbox/Public/source/npm-debug.log

file1.txt

# yuto-ogi [11:53:34]
$ ll ~/.npm
~
drwxr-xr-x   4 root      staff   136 11  3 15:50 graceful-fs
~

file2.txt

# yuto-ogi [11:54:38]
$ sudo chown -R yuto-ogi ~/.npm/

file3.txt

# yuto-ogi [11:54:44]
$ npm install bower -g
/usr/local/bin/bower -> /usr/local/lib/node_modules/bower/bin/bower
[email protected] /usr/local/lib/node_modules/bower
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
~

file4.txt

# yuto-ogi [11:54:44]
$ bower -v
1.3.12