해당 OS의 버젼은 CentOS 7.4 환경이며, httpd 는 설치한 상태이다. [root@centos7 system]# killall -v 968 968: no process found [root@centos7 system]# ps -ef |grep httpd root 968 1 0 19:17 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND apache 1089 968 0 19:17 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND apache 1090 968 0 19:17 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND apache 1091 968 0 19:17 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND..