-bash: gulp: command not found in Mac
<p>I try install gulp in mac like this :</p>

<pre><code>Is-iMac:~ itop$ npm root
/Users/itop/node_modules
Is-iMac:~ itop$ npm config set prefix /usr/local
Is-iMac:~ itop$ npm root -g
/usr/local/lib/node_modules
Is-iMac:~ itop$ sudo npm install -g gulp
</code></pre>

<p>After Install I see this error In terminal:</p>

<pre><code>npm WARN deprecated graceful-fs@3.0.8: graceful-fs version 3 and before will fail on newer node releases. Please update to graceful-fs@^4.0.0 as soon as possible.
npm WARN deprecated lodash@1.0.2: lodash@&lt;3.0.0 is no longer maintained. Upgrade to lodash@^4.0.0.
npm WARN deprecated graceful-fs@1.2.3: graceful-fs version 3 and before will fail on newer node releases. Please update to graceful-fs@^4.0.0 as soon as possible.
npm ERR! Darwin 15.3.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g" "gulp"
npm ERR! node v5.6.0
npm ERR! npm  v3.8.0
npm ERR! path /usr/local/bin/gulp
npm ERR! code EEXIST

npm ERR! Refusing to delete /usr/local/bin/gulp: ../lib/node_modules/gulp-cli/bin/gulp.js symlink target is not controlled by npm /usr/local
npm ERR! File exists: /usr/local/bin/gulp
npm ERR! Move it away, and try again.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/it/npm-debug.log
</code></pre>

<p>Now when i type <code>gulp</code> for start/run in terminal i see this error:</p>

<pre><code>-bash: gulp: command not found
</code></pre>

<p><strong>EDIT:</strong>
I try with this comment By <a href="https://stackoverflow.com/users/5652719/archie-voyageur">archie-voyageur</a>: </p>

<pre><code>npm install --global gulp-cli
</code></pre>

<p>And See this error:</p>

<pre><code>/usr/local/bin/gulp -&gt; /usr/local/lib/node_modules/gulp-cli/bin/gulp.js
npm ERR! Darwin 15.3.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "--global" "gulp-cli"
npm ERR! node v5.6.0
npm ERR! npm  v3.8.0
npm ERR! path /usr/local/share/man/man1/gulp.1
npm ERR! code EEXIST

npm ERR! Refusing to delete /usr/local/share/man/man1/gulp.1: ../../../lib/node_modules/gulp/gulp.1 symlink target is not controlled by npm /usr/local
npm ERR! File exists: /usr/local/share/man/man1/gulp.1
npm ERR! Move it away, and try again.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/itop/npm-debug.log
</code></pre>

<p>How do fix this?</p>