Linux日常操作

 

1、ip配置文件

[root] vi /etc/sysconfig/network-scripts/ifcfg-eth0
​
# Intel Corporation 82545EM Gigabit Ethernet Controller (Copper)
TYPE=Ethernet #网卡类型
DEVICE=eth0 #网卡接口名称
ONBOOT=yes #系统启动时是否自动加载
BOOTPROTO=static #启用地址协议 --static:静态协议 --bootp协议 --dhcp协议
IPADDR=192.168.1.11 #网卡IP地址
NETMASK=255.255.255.0 #网卡网络地址
GATEWAY=192.168.1.1 #网卡网关地址
DNS1=10.203.104.41 #网卡DNS地址
HWADDR=00:0C:29:13:5D:74 #网卡设备MAC地址
BROADCAST=192.168.1.255 #网卡广播地址
​

快速设置ip

ifconfig eth0 192.168.5.40 netmask 255.255.255.0

重启Linux网络

[root]  service network restart    //Linux6
[root]  systemctl restart network   //Linux7

DNS配置文件

cat /etc/resolv.conf

host文件

cat /etc/hosts

设置主机名

cat /etc/hostname

关闭防火墙，设置开机不启动

systemctl status firewalld service
systemctl stop/start firewalld 
//开机启动/不启动
systemctl disable/enable firewalld
​

临时/永久关闭Selinux

getenforce enforcing //查询selinux的状态
setenforce 0  //关闭selinux
vim /etc/selinux/config //查看selinux配置文件
​
​
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=enforcing
# SELINUXTYPE= can take one of three values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected.
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted
​

2、开启远程Linux界面

//使用root用户执行xhost +
[root] # xhost +
[oracle]$ DISPLAY=192.168.188.130:0.0;export DISPLAY;