[root@localhost ~]# ps ax|grep httpd 4165 pts/1 S+ 0:00 grep httpd [root@localhost ~]# [root@localhost ~]# etc/rc.d/init.d/httpd start bash: etc/rc.d/init.d/httpd: No such file or directory [root@localhost ~]# apachectrl bash: apachectrl: command not found [root@localhost ~]# apachectl Usage: /usr/sbin/httpd [-D name] [-d directory] [-f file] [-C "directive"] [-c "directive"] [-k start|restart|graceful|stop] [-v] [-V] [-h] [-l] [-L] [-t] [-S] Options: -D name : define a name for use in directives -d directory : specify an alternate initial ServerRoot -f file : specify an alternate ServerConfigFile -C "directive" : process directive before reading config files -c "directive" : process directive after reading config files -e level : show startup errors of level (see LogLevel) -E file : log startup errors to file -v : show version number -V : show compile settings -h : list available command line options (this page) -l : list compiled in modules -L : list available configuration directives -t -D DUMP_VHOSTS : show parsed settings (currently only vhost settings) -S : a synonym for -t -D DUMP_VHOSTS -t : run syntax check for config files [root@localhost ~]# apachectl -k start [root@localhost ~]# ps ax|grep httpd 4213 ? Ss 0:00 /usr/sbin/httpd -k start 4214 ? S 0:00 /usr/sbin/httpd -k start 4215 ? S 0:00 /usr/sbin/httpd -k start 4216 ? S 0:00 /usr/sbin/httpd -k start 4217 ? S 0:00 /usr/sbin/httpd -k start 4218 ? S 0:00 /usr/sbin/httpd -k start 4219 ? S 0:00 /usr/sbin/httpd -k start 4220 ? S 0:00 /usr/sbin/httpd -k start 4221 ? S 0:00 /usr/sbin/httpd -k start 4223 pts/1 S+ 0:00 grep httpd