CentOS 7 vs CentOS 6的不同

  (1)桌面系统

  [CentOS6] GNOME 2.x

  [CentOS7] GNOME 3.x(GNOME Shell)

  (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] GRUB Legacy (+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

  $ chronyc sources

  (10)修改时间

  [CentOS6]

  $ vim /etc/sysconfig/clock

  ZONE=”Asia/Tokyo”

  UTC=fales

  $ sudo ln -s /usr/share/zoneinfo/Asia/Tokyo /etc/localtime

  [CentOS7]

  $ timedatectl set-timezone Asia/Tokyo

  $ timedatectl status

  (11)修改地区

  [CentOS6]

  $ vim /etc/sysconfig/i18n

  LANG=”ja_JP.utf8″

  $ /etc/sysconfig/i18n

  $ locale

  [CentOS7]

  $ localectl set-locale LANG=ja_JP.utf8

  $ localectl status

  (12)服务相关

  1)启动停止

  [CentOS6]

  $ service service_name start

  $ service service_name stop

  $ service sshd restart/status/reload

  [CentOS7]

  $ systemctl start service_name

  $ systemctl stop service_name

  $ systemctl restart/status/reload sshd

  自启动

  [CentOS6]

  $ chkconfig service_name on/off

  [CentOS7]

  $ systemctl enable service_name

  $ systemctl disable service_name

  服务一览

  [CentOS6]

  $ chkconfig –list

  [CentOS7]

  $ systemctl list-unit-files

  $ systemctl –type service

  强制停止

  [CentOS6]

  $ kill -9

  [CentOS7]

  $ systemctl kill –signal=9 sshd

  (13)网络

  1)网络信息

  [CentOS6]

  $ netstat

  $ netstat -I

  $ netstat -n

  [CentOS7]

  $ ip n

  $ ip -s l

  $ ss

  2)IP地址MAC地址

  [CentOS6]

  $ ifconfig -a

  [CentOS7]

  $ ip address show

  3)路由

  [CentOS6]

  $ route -n

  $ route -A inet6 -n

  [CentOS7]

  $ ip route show

  $ ip -6 route show

  (14)重启关闭

  1)关闭

  [CentOS6]

  $ shutdown -h now

  [CentOS7]

  $ poweroff

  $ systemctl poweroff

  2)重启

  [CentOS6]

  $ reboot

  $ shutdown -r now

  [CentOS7]

  $ reboot

  $ systemctl reboot

  3)单用户模式

  [CentOS6]

  $ init S

  [CentOS7]

  $ systemctl rescue

  4)启动模式

  [CentOS6]

  [GUICUI]

  $ vim /etc/inittab

  id:3:initdefault:

  [CUIGUI]

  $ startx

  [CentOS7]

  [GUICUI]

  $ systemctl isolate multi-user.target

  [CUIGUI]

  $systemctl isolate graphical.target

  默认

  $ systemctl set-default graphical.target

  $ systemctl set-default multi-user.target

  当前

  $ systemctl get-default