PHP can not be started
<p>I ran the following command:</p>

<pre><code>/usr/local/php/sbin/php-fpm start
</code></pre>

<p>but the output is:</p>

<pre><code>Usage: php-fpm [-n] [-e] [-h] [-i] [-m] [-v] [-t] [-p &lt;prefix&gt; ] [-c &lt;file&gt;] [-d foo[=bar]] [-y &lt;file&gt;]
  -c &lt;path&gt;|&lt;file&gt; Look for php.ini file in this directory
  -n               No php.ini file will be used
  -d foo[=bar]     Define INI entry foo with value 'bar'
  -e               Generate extended information for debugger/profiler
  -h               This help
  -i               PHP information
  -m               Show compiled in modules
  -v               Version number
  -p, --prefix &lt;dir&gt;
                   Specify alternative prefix path to FastCGI process manager (default: /usr/local/webserver/php).
  -y, --fpm-config &lt;file&gt;
                   Specify alternative path to FastCGI process manager config file.
  -t, --test       Test FPM configuration and exit
</code></pre>

<p>Is there anyone who has knowledge about this problem? Any advice appreciated!</p>

<p>Updated:</p>

<p>OS : CentOS 5.6
PHP: 5.3.6</p>

<p>I tried <code>/usr/local/php/sbin/php-fpm</code> and it works! Why?</p>

<p>I installed PHP with its source code.</p>
