[root@localhost ~]# ps ax|grep httpd
  2441 ?        Ss     0:00 /usr/sbin/httpd
  2443 ?        S      0:00 /usr/sbin/httpd
  2444 ?        S      0:00 /usr/sbin/httpd
  2445 ?        S      0:00 /usr/sbin/httpd
  2446 ?        S      0:00 /usr/sbin/httpd
  2447 ?        S      0:00 /usr/sbin/httpd
  2448 ?        S      0:00 /usr/sbin/httpd
  2449 ?        S      0:00 /usr/sbin/httpd
  2450 ?        S      0:00 /usr/sbin/httpd
  2555 pts/2    S+     0:00 grep httpd
[root@localhost ~]#