7 CMD commands IT people need to know

With just a few command lines, you can solve a big problem, instead of having to click on software with a graphical interface, sometimes it does not appear on the Windows interface, such as the nslookup command to find the IP address associated with the Domain…

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If you are in use PowerShell or Command Prompt, the execution of these commands is the same in both tools. In this article, AnonyViet only briefly introduces 10 commands you will often use when solving problems related to computer networks.

ipconfig: Find computer IP address quickly

You can find your IP address from the Control Panel, but it takes a few clicks to get there.

Command ipconfig will help you quickly identify IP address your computer and other information, such as Gateway’s address to know which IP your computer’s network is routed to the Internet by

Expanding more than half would be the command ipconfig /all , with this command you will see more detailed information about MAC address of network card, DNS Server you’re using….

ipconfig /flushdns: help clear DNS cache

If you often change DNS to access the Website faster, or visit websites that are blocked by the network operator. For example, in the past, you used to change your DNS to Google’s 8.8.8.8 to access Facebook. However, there will be some cases Old DNS also cache (temporary memory) to reduce time Asking for Directions to the Internet, so some Website access will not be made, even if you have changed to DNS.

With the command ipconfig /flushdns will help you clear the cache of the old DNS, so that the computer will immediately ask for directions with the new DNS.

You should use the command ipconfig /flushdns as soon as I changed to another DNS.

Ping and Tracert: fix network connection problems

If you’re having trouble connecting to a website or a network connection error, Windows and other operating systems have built-in tools to help you determine the network connection status on your system.

Command `ping`

You use the structure ping địa-chỉ-website or ping địa-chỉ-IP

Eg: ping anonyviet.com

Windows will now send packets to the address you just pinged, and on the screen will appear parameters about the packet sent, reply packet, response time ….

Simple if you see Request time out thi means disconnection

Still see Reply…. then it is connectable, if time The higher the speed, the slower the connection speed and vice versa

Command `Tracert`

Used to determine your network path. For example, if you want to find out, from your home computer, want to access AnonyViet, which IPs it will go through, use the command tracert anonyviet.com

For example, at home, the computer IP will go to the Internet Router IP, then to a series of VNPT gateways, then go through Hong Kong, and then to AnonyViet’s IP.

Shutdown: timer to shut down or restart the computer

This command helps you to shutdown at a preset time (in seconds).

You use with structure like this:

shutdown /s /f /t 10 : Turn off the computer after 10 seconds
shutdown /r /f /t 10: Restart the computer after 10 seconds

sfc /scannow: scan for Windows errors

This is a command to help check Windows system errors, if missing files or corrupted system files, the program will automatically fix errors and restore to help Windows work better.