Shulou(Shulou.com)06/02 Report--

Differences in CentOS 7 vs CentOS 6

(1) Desktop system

[CentOS6] GNOME 2.x

[CentOS7] GNOME 3.x (GNOME Shell)

(2) File system

[CentOS6] ext4

[CentOS7] xfs

(3) Kernel version

[CentOS6] 2.6.x-x

[CentOS7] 3.10.x-x

(4) start the loader

[CentOS6] GRUB Legacy (+ efibootmgr)

[CentOS7] GRUB2

(5) Firewall

[CentOS6] iptables

[CentOS7] firewalld

(6) default database

[CentOS6] MySQL

[CentOS7] MariaDB

(7) File structure

[CentOS6] / bin, / sbin, / lib, and / lib64 under /

[CentOS7] / bin, / sbin, / lib, and / lib64 move to / usr

(8) Hostname

[CentOS6] / etc/sysconfig/network

[CentOS7] / etc/hostname

(9) time synchronization

[CentOS6]

$ntp

$ntpq-p

[CentOS7]

$chrony

$chronyc sources

(10) modification time

[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) modify the area

[CentOS6]

$vim / etc/sysconfig/i18n

LANG= "ja_JP.utf8"

$/ etc/sysconfig/i18n

$locale

[CentOS7]

$localectl set-locale LANG=ja_JP.utf8

$localectl status

(12) Service related

1) start and stop

[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

Self-starting

[CentOS6]

$chkconfig service_name on/off

[CentOS7]

$systemctl enable service_name

$systemctl disable service_name

Service list

[CentOS6]

$chkconfig-list

[CentOS7]

$systemctl list-unit-files

$systemctl-type service

Forced stop

[CentOS6]

$kill-9

[CentOS7]

$systemctl kill-signal=9 sshd

(13) Network

1) Network information

[CentOS6]

$netstat

$netstat-I

$netstat-n

[CentOS7]

$ip n

$ip-s l

$ss

2) IP address MAC address

[CentOS6]

$ifconfig-a

[CentOS7]

$ip address show

3) routin

[CentOS6]

$route-n

$route-An inet6-n

[CentOS7]

$ip route show

$ip-6 route show

(14) restart and shutdown

1) close

[CentOS6]

$shutdown-h now

[CentOS7]

$poweroff

$systemctl poweroff

2) restart

[CentOS6]

$reboot

$shutdown-r now

[CentOS7]

$reboot

$systemctl reboot

3) single user mode

[CentOS6]

$init S

[CentOS7]

$systemctl rescue

4) Startup mode

[CentOS6]

[GUICUI]

$vim / etc/inittab

Id:3:initdefault:

[CUIGUI]

$startx

[CentOS7]

[GUICUI]

$systemctl isolate multi-user.target

[CUIGUI]

$systemctl isolate graphical.target

Default

$systemctl set-default graphical.target

$systemctl set-default multi-user.target

Current

$systemctl get-default

Reference:

Http://urashita.com/archives/1538

Http://qiita.com/sion_cojp/items/115e1671fcbc8f214aee

Https://www.upken.jp/kb/cent6-cent7.html

Http://inaba-serverdesign.jp/blog/20141110/centos7.html

Repost address: http://www.centoscn.com/CentOS/2016/0725/7682.html

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