CentOS 7与CentOS 6的不同

CentOS 7与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 <PID> 

[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] 
[GUI➡CUI] 
$ vim /etc/inittab 
id:3:initdefault: 
[CUI➡GUI] 
$ startx 

[CentOS7] 
[GUI➡CUI] 
$ systemctl isolate multi-user.target 
[CUI➡GUI] 
$systemctl isolate graphical.target 
默认 
$ systemctl set-default graphical.target 
$ systemctl set-default multi-user.target 
当前 
$ systemctl get-default 

原文地址: https://seonoco.com/centos7-vs-centos6


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