ubuntu无法找到ifconfig（command not found: ifconfig）

演示环境

$ uname -a
Linux xxxxx-xxxxx-xxxx5.4.0-47-generic #51-Ubuntu SMP Fri Sep 4 19:50:52 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

1.关于

重装完系统，发现没有命令ifconfig

$ ifconfig
zsh: command not found: ifconfig

2.检查是否存在该命令

自己使用了ohmyzsh,检查配置文件的PATH中是否包含sbin目录，还需要检查sbin目录下是否存在ifconfig命令。

3.安装

• 3.1 安装命令

$ sudo apt-get install ifconfig

失败，提示找不到该包

$ sudo apt-get install ifconfig
[sudo] password for cube:
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package ifconfig

*3.2 正确安装指令

ifconfig包含在net-tools中，该库还包含其他命令:whois

sudo apt-get install net-tools

安装结果

$ sudo apt-get install net-tools
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  net-tools
0 upgraded, 1 newly installed, 0 to remove and 104 not upgraded.
Need to get 196 kB of archives.
After this operation, 864 kB of additional disk space will be used.
Get:1 http://mirrors.aliyun.com/ubuntu focal/main amd64 net-tools amd64 1.60+git20180626.aebd88e-1ubuntu1 [196 kB]
Fetched 196 kB in 12s (16.6 kB/s)
Selecting previously unselected package net-tools.
(Reading database ... 166990 files and directories currently installed.)
Preparing to unpack .../net-tools_1.60+git20180626.aebd88e-1ubuntu1_amd64.deb ...
Unpacking net-tools (1.60+git20180626.aebd88e-1ubuntu1) ...
Setting up net-tools (1.60+git20180626.aebd88e-1ubuntu1) ...
Processing triggers for man-db (2.9.1-1) ...

4.使用ifconfig

$ ifconfig
lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 151  bytes 13005 (13.0 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 151  bytes 13005 (13.0 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 00