title: -bash: express: command not found after installing express and express-generator with NPM
body: <p>I have a server with NodeJS and NPM already installed. 
  Then process to install Express with NPM:</p>
  
  <pre><code>$ npm install express -g
  </code></pre>
  
  <p>It answered:</p>
  
  <pre><code>root@server ~ $ npm install express -g
  npm http GET https://registry.npmjs.org/express
  npm http 200 https://registry.npmjs.org/express
  npm http GET https://registry.npmjs.org/debug
  npm http GET https://registry.npmjs.org/depd/0.4.5
  npm http GET https://registry.npmjs.org/escape-html/1.0.1
  npm http GET https://registry.npmjs.org/parseurl
  npm http GET https://registry.npmjs.org/on-finished
  npm http GET https://registry.npmjs.org/methods/1.1.0
  npm http GET https://registry.npmjs.org/path-to-regexp/0.1.3
  npm http GET https://registry.npmjs.org/fresh/0.2.4
  npm http GET https://registry.npmjs.org/media-typer/0.3.0
  npm http GET https://registry.npmjs.org/proxy-addr
  npm http GET https://registry.npmjs.org/range-parser
  npm http GET https://registry.npmjs.org/qs/2.2.4
  npm http GET https://registry.npmjs.org/serve-static
  npm http GET https://registry.npmjs.org/send/0.9.3
  npm http GET https://registry.npmjs.org/type-is
  npm http GET https://registry.npmjs.org/vary
  npm http GET https://registry.npmjs.org/cookie/0.1.2
  npm http 304 https://registry.npmjs.org/debug
  npm http 304 https://registry.npmjs.org/on-finished
  npm http 304 https://registry.npmjs.org/escape-html/1.0.1
  npm http GET https://registry.npmjs.org/merge-descriptors/0.0.2
  npm http GET https://registry.npmjs.org/utils-merge/1.0.0
  npm http GET https://registry.npmjs.org/finalhandler/0.2.0
  npm http GET https://registry.npmjs.org/accepts
  npm http GET https://registry.npmjs.org/etag
  npm http 304 https://registry.npmjs.org/methods/1.1.0
  npm http 304 https://registry.npmjs.org/depd/0.4.5
  npm http 304 https://registry.npmjs.org/range-parser
  npm http GET https://registry.npmjs.org/cookie-signature/1.0.5
  npm http 304 https://registry.npmjs.org/proxy-addr
  npm http 304 https://registry.npmjs.org/serve-static
  npm http 304 https://registry.npmjs.org/fresh/0.2.4
  npm http 304 https://registry.npmjs.org/type-is
  npm http 304 https://registry.npmjs.org/media-typer/0.3.0
  npm http 304 https://registry.npmjs.org/send/0.9.3
  npm http 304 https://registry.npmjs.org/qs/2.2.4
  npm http 304 https://registry.npmjs.org/vary
  npm http 304 https://registry.npmjs.org/merge-descriptors/0.0.2
  npm http 304 https://registry.npmjs.org/cookie/0.1.2
  npm http 304 https://registry.npmjs.org/utils-merge/1.0.0
  npm http 304 https://registry.npmjs.org/finalhandler/0.2.0
  npm http 304 https://registry.npmjs.org/accepts
  npm http 304 https://registry.npmjs.org/etag
  npm http 304 https://registry.npmjs.org/cookie-signature/1.0.5
  npm http 304 https://registry.npmjs.org/parseurl
  npm http 304 https://registry.npmjs.org/path-to-regexp/0.1.3
  npm http GET https://registry.npmjs.org/ee-first/1.0.5
  npm http GET https://registry.npmjs.org/mime-types
  npm http GET https://registry.npmjs.org/crc/3.0.0
  npm http GET https://registry.npmjs.org/negotiator/0.4.9
  npm http GET https://registry.npmjs.org/forwarded
  npm http GET https://registry.npmjs.org/ipaddr.js/0.1.3
  npm http GET https://registry.npmjs.org/ms/0.6.2
  npm http GET https://registry.npmjs.org/destroy/1.0.3
  npm http GET https://registry.npmjs.org/mime/1.2.11
  npm http 304 https://registry.npmjs.org/mime-types
  npm http 304 https://registry.npmjs.org/forwarded
  npm http 304 https://registry.npmjs.org/negotiator/0.4.9
  npm http 304 https://registry.npmjs.org/ipaddr.js/0.1.3
  npm http 304 https://registry.npmjs.org/crc/3.0.0
  npm http 304 https://registry.npmjs.org/ee-first/1.0.5
  npm http 304 https://registry.npmjs.org/ms/0.6.2
  npm http 304 https://registry.npmjs.org/mime/1.2.11
  npm http 304 https://registry.npmjs.org/destroy/1.0.3
  npm http GET https://registry.npmjs.org/mime-db
  npm http 304 https://registry.npmjs.org/mime-db
  express@4.9.8 /var/www/site/npm/lib/node_modules/express
  ├── merge-descriptors@0.0.2
  ├── utils-merge@1.0.0
  ├── cookie@0.1.2
  ├── fresh@0.2.4
  ├── escape-html@1.0.1
  ├── range-parser@1.0.2
  ├── cookie-signature@1.0.5
  ├── finalhandler@0.2.0
  ├── vary@1.0.0
  ├── media-typer@0.3.0
  ├── methods@1.1.0
  ├── parseurl@1.3.0
  ├── serve-static@1.6.4
  ├── path-to-regexp@0.1.3
  ├── depd@0.4.5
  ├── qs@2.2.4
  ├── debug@2.0.0 (ms@0.6.2)
  ├── on-finished@2.1.0 (ee-first@1.0.5)
  ├── proxy-addr@1.0.3 (forwarded@0.1.0, ipaddr.js@0.1.3)
  ├── etag@1.4.0 (crc@3.0.0)
  ├── send@0.9.3 (destroy@1.0.3, ms@0.6.2, mime@1.2.11)
  ├── accepts@1.1.2 (negotiator@0.4.9, mime-types@2.0.2)
  └── type-is@1.5.2 (mime-types@2.0.2)
  </code></pre>
  
  <p>and also</p>
  
  <pre><code>$ npm install express-generator -g
  </code></pre>
  
  <p>It answered:</p>
  
  <pre><code>root@server ~ $ npm install express-generator -g
  npm http GET https://registry.npmjs.org/express-generator
  npm http 304 https://registry.npmjs.org/express-generator
  npm http GET https://registry.npmjs.org/commander/1.3.2
  npm http GET https://registry.npmjs.org/mkdirp/0.5.0
  npm http 304 https://registry.npmjs.org/mkdirp/0.5.0
  npm http 304 https://registry.npmjs.org/commander/1.3.2
  npm http GET https://registry.npmjs.org/keypress
  npm http GET https://registry.npmjs.org/minimist/0.0.8
  npm http 200 https://registry.npmjs.org/minimist/0.0.8
  npm http GET https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz
  npm http 304 https://registry.npmjs.org/keypress
  npm http 200 https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz
  /var/www/site/npm/bin/express -&gt; /var/www/site/npm/lib/node_modules/express-generator/bin/express
  express-generator@4.9.0 /var/www/site/npm/lib/node_modules/express-generator
  ├── commander@1.3.2 (keypress@0.1.0)
  └── mkdirp@0.5.0 (minimist@0.0.8)
  </code></pre>
  
  <p>and all good up here, at least I no errors.
  Now the problem arises when I want to use express:</p>
  
  <pre><code>$ express myapp
  </code></pre>
  
  <p>It answered:</p>
  
  <pre><code>-bash: express: command not found
  </code></pre>
  
  <p>Usually this problem occurs when there is express-generator was installed, and the install is solved, but it is not me =(. If anyone has any idea what I can do, will thank you.</p>
  
  <p>NodeJS version: v0.11.13-pre 
  NPM Version: 1.4.6</p>
  
  <p>Ps: All these commands I ran as the root</p>
  
  <p>Ps2: Sorry for my bad english</p>