CentOS7vsCentOS6的不同
(1)桌面系统
[CentOS6]GNOME2.x
[CentOS7]GNOME3.x（GNOMEShell）
(2)文件系统
[CentOS6]ext4
[CentOS7]xfs
(3)内核版本
[CentOS6]2.6.x-x
[CentOS7]3.10.x-x
(4)启动加载器
[CentOS6]GRUBLegacy(+efibootmgr)
[CentOS7]GRUB2
(5)防火墙
[CentOS6]iptables
[CentOS7]firewalld
(6)默认数据库
[CentOS6]MySQL
[CentOS7]MariaDB
(7)文件结构
[CentOS6]/bin,/sbin,/lib,and/lib64在/下
[CentOS7]/bin,/sbin,/lib,and/lib64移到/usr下
(8)主机名
[CentOS6]/etc/sysconfig/network
[CentOS7]/etc/hostname
(9)时间同步
[CentOS6]
$ntp
$ntpq-p
[CentOS7]
$chrony
$chronycsources
(10)修改时间
[CentOS6]
$vim/etc/sysconfig/clock
ZONE="Asia/Tokyo"
UTC=fales
$sudoln-s/usr/share/zoneinfo/Asia/Tokyo/etc/loc altime
[CentOS7]
$timedatectlset-timezoneAsia/Tokyo
$timedatectlstatus
(11)修改地区
[CentOS6]
$vim/etc/sysconfig/i18n
LANG="ja_JP.utf8"
$/etc/sysconfig/i18n
$locale
[CentOS7]
$localectlset-localeLANG=ja_JP.utf8
$localectlstatus
(12)服务相关
1）启动停止
[CentOS6]
$serviceservice_namestart
$serviceservice_namestop
$servicesshdrestart/status/reload
[CentOS7]
$systemctlstartservice_name
$systemctlstopservice_name
$systemctlrestart/status/reloadsshd
自启动
[CentOS6]
$chkconfigservice_nameon/off
[CentOS7]
$systemctlenableservice_name
$systemctldisableservice_name
服务一览
[CentOS6]
$chkconfig--list
[CentOS7]
$systemctllist-unit-files
$systemctl--typeservice
强制停止
[CentOS6]
$kill-9<PID>
[CentOS7]
$systemctlkill--signal=9sshd
(13)网络
1）网络信息
[CentOS6]
$netstat
$netstat-I
$netstat-n
[CentOS7]
$ipn
$ip-sl
$ss
2）IP地址MAC地址
[CentOS6]
$ifconfig-a
[CentOS7]
$ipaddressshow
3）路由
[CentOS6]
$route-n
$route-Ainet6-n
[CentOS7]
$iprouteshow
$ip-6routeshow
(14)重启关闭
1）关闭
[CentOS6]
$shutdown-hnow
[CentOS7]
$poweroff
$systemctlpoweroff
2）重启
[CentOS6]
$reboot
$shutdown-rnow
[CentOS7]
$reboot
$systemctlreboot
3）单用户模式
[CentOS6]
$initS
[CentOS7]
$systemctlrescue
4）启动模式
[CentOS6]
[GUICUI]
$vim/etc/inittab
id:3:initdefault:
[CUIGUI]
$startx
[CentOS7]
[GUICUI]
$systemctlisolatemulti-user.target
[CUIGUI]
$systemctlisolategraphical.target
默认
$systemctlset-defaultgraphical.target
$systemctlset-defaultmulti-user.target
当前
$systemctlget-default