$ ps aux | grep httpd
1003 22806 0.0 0.3 17624 7684 ? S May25 0:00 /opt/web/apache/bin/httpd -k start
1003 4834 0.0 0.3 17624 7684 ? S May28 0:00 /opt/web/apache/bin/httpd -k start
1003 5299 0.0 0.3 17740 7804 ? S May28 0:00 /opt/web/apache/bin/httpd -k start
1003 5503 0.0 0.3 17624 7684 ? S May28 0:00 /opt/web/apache/bin/httpd -k start
1003 5875 0.0 0.3 17624 7684 ? S May28 0:00 /opt/web/apache/bin/httpd -k start
1003 5970 0.0 0.3 17624 7684 ? S May28 0:00 /opt/web/apache/bin/httpd -k start
1003 6062 0.0 0.3 17624 7672 ? S May28 0:00 /opt/web/apache/bin/httpd -k start
1003 6245 0.0 0.3 17624 7684 ? S May28 0:00 /opt/web/apache/bin/httpd -k start
1003 6338 0.0 0.3 17624 7672 ? S May28 0:00 /opt/web/apache/bin/httpd -k start
1003 24091 0.0 0.3 17624 7764 ? S May30 0:00 /opt/web/apache/bin/httpd -k start
My apache user seems to be 1003, isn't it ?