( )、单任务 、多任务 、单任务 D多用户、( ) ( ) ,可以采用( )命令获得帮助A.?ls ( )+x +x +x +“user”的命令是( ) “user”及其主目录下所有文件的命令是( )–puser –ruser –auser –( ) ( )A./etc/work-scripts/ifcfg-eth0 B./etc/workC./etc/ D./etc/( )A./etc/hostsB./etc/./etc/workD./etc/( )A./etc/ B./var/named/ C./var/named/ D./etc/( )目录下A./etc/dhcpd/ B./var/log/dhcpd/ C./var/lib/dhcp/ D./var/lib/dhcpd/,Apache把自己的配置文件放在了( )目录中A./etc/httpd/ B./etc/httpd/conf/ C./etc/ D./etc/apache/( ) 、权限是“400”的、属于root用户的文件的内容( ) ( ) ( ) ( ) (
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