・httpd ファイルの構文チェック

[root@alma]# httpd -t

Syntax OK※Syntax OK になっていればＯＫ

・バーチャルドメイン一覧表示

[root@alma]# httpd -t -D DUMP_VHOSTS

VirtualHost configuration:
*:443is a NameVirtualHost
default server www.mama-net.jp (/etc/httpd/conf.d/ssl.www.mama-net.jp.conf:1)
port 443 namevhost www.mama-net.jp (/etc/httpd/conf.d/ssl.www.mama-net.com.conf:1)
port 443 namevhost www.papa-net.com (/etc/httpd/conf.d/ssl.papa-net.com.conf:1)
port 443 namevhost sub.papa-net.com (/etc/httpd/conf.d/ssl.sub.papa-net.com.conf:1)
*:80is a NameVirtualHost
default server www.mama-net.jp (/etc/httpd/conf.d/www.mama-net.jp.conf:1)
port 80 namevhost www.mama-net.jp (/etc/httpd/conf.d/www.mama-net.jp.conf:1)
port 80 namevhost www.papa-net.com (/etc/httpd/conf.d/www.papa-net.info.conf:1)
port 80 namevhost sub.papa-net.com (/etc/httpd/conf.d/sub.papa-net.com.conf:1)
port 80 namevhost any (/etc/httpd/conf.d/virtualhost-reject.conf:1)