1. Ipconfig is not an internal or external command
A: Want to check the IP of your computer today, but return a result, see question 1.
Resolution process: This problem is mainly caused by improper configuration of environment variables or ipconfig executable file corruption , in order to solve the problem with Win7 as an example.
The first step: run these executable files directly in the directory discovery can call up a command execution window, but the flash is gone.
This makes it possible to conclude that these executables are not problematic and are intact.
The second step: view the relevant information through the "My Computer (right click) → (appear) properties (then click on" Properties ") → Advanced system settings tab of the" Environment variables "button.
Locate the path in system variables (either empty or empty), then double-click the path system variable, and then in the Variable Value column,
Last input: "C:\windows\system32\".
Step three: OK, re-enter CMD, you can.
Summary of small problems