Commands such as ping cannot be used under command line DOS

Methods/Steps

1. Generally, the ping command cannot be used, as shown in the figure:

   

2. The situation where the ping command cannot be used is basically caused by "environment variables". Checking the environment variable path, I found that "C:WindowsSystem32" is not configured:

   

3. Right-click the "Computer" icon on the desktop (XP system is my computer) - click "Properties" - the interface that opens is as shown:

   

4. Click "Advanced System Settings"--Open the "System Properties" window--Click the "Environment Variables" button:

   

5. Find the "Path" item in "System Variables"- - Double-click:

   

6. Append "C:WindowsSystem32" to "Path", and then "Confirm" all the way.

   

7. The environment variable path is set and can be viewed in the cmd window:

   

8. At this point, The ping command can be used normally again:

   

   The above introduces the inability to use ping and other commands under command line DOS, including the relevant aspects. I hope it will be helpful to friends who are interested in PHP tutorials.