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linux能获取本地ip地址吗

Can linux get local ip address?

Jun 23, 2022 am 10:52 AM
linux

linux能获取本地ip地址。方法:1、利用“ifconfig -a”命令,该命令用于显示或者设置网络设备信息;2、利用“ip address”命令,语法为“ip address | grep eth0 | awk '{print$2}'”;3、利用“hostname -I”命令,该命令可以获取具体的网卡信息。

Can linux get local ip address?

本教程操作环境:linux7.3系统、Dell G3电脑。

linux能获取本地ip地址吗

在介绍前先学习一下三个命令行筛选的主要的指令,也是频繁使用到的命令。

1、head。head 命令可用于查看文件的开头部分的内容,有一个常用的参数 -n 用于显示行数,默认为 10。

运行head --help查看说明信息:

  • -q 隐藏文件名

  • -v 显示文件名

  • -c 显示的字节数。

  • -n 显示的行数。

2、grep。 grep 命令用于查找文件里符合条件的字符串。运行grep --help查看说明信息,参数太多主要有以下几种:

grep -r递归选择。

grep -v反选,显示不包含匹配文本的所有行。

grep -n显示符合样式的那一行之前。

grep -A显示符合范本样式的那一列之外,并显示该行之后的内容。

3、awk。强大的文本分析工具,命令使用过于复杂(awk --help),只需要知道 awk '{print$2}'为打印第二行数据。

4、tail。tail命令可用于查看文件的结束部分的内容,有一个常用的参数 -n 用于显示行数,默认为 10。tail --help查看主要的参数:

tail -n显示最后多少行

tail -c显示最后十个字符

tail -f 循环读取,跟踪显示最后十行

5、cut。显示每行从开头算起的文字。

cut -b :以字节为单位进行分割。

cut -c :以字符为单位进行分割

cut -d :自定义分隔符,默认为制表符

cut -f :与-d一起使用,指定显示哪个区域

获取Linux IP地址的几种方法:

一、ifconfig命令

无线网卡地址:

echo wlan0=`ifconfig  wlan0 | head -n2 | grep inet | awk '{print$2}'`
Copy after login

有线网卡地址:

echo eth0=`ifconfig  eth0 | head -n2 | grep inet | awk '{print$2}'`
Copy after login

或者命令:

ifconfig | grep "inet " | cut -d: -f2 | awk '{print $1}' | grep -v "^127."
Copy after login

二.ip address命令

无线网卡地址:

ip address | grep wlan0 | awk '{print$2}'
Copy after login

有线网卡地址:

ip address | grep eth0 | awk '{print$2}'
Copy after login

或者

echo eth0=`ip address show  eth0 | head -n4 | grep inet | awk '{print$2}'
echo wlan0=`ip address show wlan0 | head -n4 | grep inet | awk '{print$2}'
Copy after login

三、 hostname -I 命令

运行hostname -help命令查看说明信息:

Can linux get local ip address?

hostname -i得到环回地址127.0.1.1, hostname -I得到具体的网卡信息192.168.31.82 。

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