番茄网场景描述：在Kali操作系统中查看ip地址，使用ifconfig命令查看则会报错误
bash: ifconfig: command not found
如下截图：
Kali的版本为：2020.3
需要使用$sudo ifconfig 就可以显示kali的ip地址。
zhj@kali001:~$ sudo ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.27 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::20c:29ff:fe24:eace prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:24:ea:ce txqueuelen 1000 (Ethernet)
RX packets 1137 bytes 328025 (320.3 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 137 bytes 10694 (10.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
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 12 bytes 556 (556.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 12 bytes 556 (556.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
如果还是显示“bash: ifconfig: command not found”，则说明未安装net-tools，需要安装一下net-tools
zhj@kali001:~$ sudo apt-get install net-tools
[sudo] password for zhj:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
net-tools
1 upgraded, 0 newly installed, 0 to remove and 23 not upgraded.
Need to get 250 kB of archives.
After this operation, 12.3 kB of additional disk space will be used.
Get:1 http://mirrors.neusoft.edu.cn/kali kali-rolling/main amd64 net-tools amd64 1.60+git20181103.0eebece-1 [250 kB]
Fetched 250 kB in 3s (84.1 kB/s)
(Reading database ... 262982 files and directories currently installed.)
Preparing to unpack .../net-tools_1.60+git20181103.0eebece-1_amd64.deb ...
Unpacking net-tools (1.60+git20181103.0eebece-1) over (1.60+git20180626.aebd88e-1) ...
Setting up net-tools (1.60+git20181103.0eebece-1) ...
Processing triggers for man-db (2.9.3-2) ...
Processing triggers for kali-menu (2020.3.2) ...
