What Ipconfig Command Line Option Can Be Used to Delete Cached Dns Information From Memory?

There are some things you tin can only do from the command line—even in Windows. Some of these tools don't have graphical equivalents, while others are just plain faster to utilise than their graphical interfaces.

If you're into using PowerShell over Command Prompt, you should note that all the commands we're covering in this article work but the same in either tool. And plainly, nosotros tin't possibly cover all the useful commands that these tools offer. Instead, we'll exist focusing on commands that should be useful even if you're not a command-line person.

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ipconfig: Chop-chop Find Your IP Address

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You can find your IP address from the Control Panel, but it takes a few clicks to get there. The ipconfig command is a fast way of determining your calculator'south IP address and other information, such as the address of its default gateway—useful if yous want to know the IP address of your router's spider web interface.

To use the command, only blazonipconfig at the Command Prompt. Y'all'll see a listing of all the network connections your figurer is using. Await nether "Wireless LAN adapter" if you're connected to Wi-Fi or "Ethernet adapter" if yous're connected to a wired network. For even more details, you can use theipconfig /all command.

ipconfig /flushdns: Affluent Your DNS Resolver Cache

RELATED: seven Reasons to Employ a Tertiary-Party DNS Service

If you alter your DNS server, the effects won't necessarily take place immediately. Windows uses a cache that remembers DNS responses it's received, saving time when you access the same addresses again in the futurity. To ensure Windows is getting addresses from the new DNS servers instead of using sometime, cached entries, run theipconfig /flushdns command after changing your DNS server.

ping and tracert: Troubleshoot Network Connexion Issues

If you lot're experiencing issues connecting to a website or other network connection bug, Windows and other operating systems take some standard tools you tin utilize to identify problems.

Get-go, there's the ping command. Typeping howtogeek.com (or whatever Internet server you want to test) and Windows will send packets to that address. Yous tin use either a name or the actual IP address. The server at that IP accost (in our instance, the How-To Geek server) volition respond and let you know it's received them. You'll be able to encounter if any packets didn't make information technology to the destination—mayhap you lot're experiencing packet loss—and how long information technology took to go the response—maybe the network is saturated and packets are taking a while to achieve their destinations.

RELATED: How to Employ Traceroute to Place Network Issues

The tracert command traces the route it takes for a package to achieve a destination and shows you information about each hop along that route. For case, if you runtracert howtogeek.com, you'll meet data virtually each node the packet interacts with on its way to accomplish our server. If you lot're having problems connecting to a website, tracert tin can show you where the trouble is occurring.

RELATED: How To Troubleshoot Internet Connection Issues

For more information almost using these commands—and other great tools for figuring out why your network or Internet connection is giving you problems—check out our introduction to troubleshooting Internet connectedness problems.

shutdown: Create Shutdown Shortcuts for Windows

The shutdown control lets you shut down or restart Windows. Admittedly, information technology was more useful in Windows 8 (where the shut down button was harder to access), but still handy no matter what version of Windows y'all utilize. Y'all can use the command to create your own shortcuts and identify them on your Start menu, desktop, or even taskbar.

RELATED: How to Use the Advanced Startup Options to Fix Your Windows 8 or 10 PC

In Windows 8 and ten, you lot can fifty-fifty use a special switch to restart your figurer into the avant-garde startup options menu. To use the command at the Command Prompt or when creating a shortcut, just type one of the following:

• shutdown /south /t 0: Performs a regular shut down.
• shutdown /r /t 0:Restart the computer.
• shutdown /r /o:Restarts the computer into advanced options.

sfc /scannow: Scan Arrangement Files for Bug

RELATED: How to Scan for (and Fix) Decadent Arrangement Files in Windows

Windows includes a arrangement file checker tool that scans all the Windows organization files and looks for problems. If system files are missing or corrupted, the organisation file checker volition repair them. This may set up issues with some Windows systems.

To use this tool, open up a Command Prompt window as Ambassador and run thesfc /scannow command.

telnet: Connect to Telnet Servers

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The telnet client isn't installed past default. Instead, it'due south 1 of the optional Windows features that you tin install through the Control Panel. Once installed, you can use thetelnet command to connect to telnet servers without installing any third-party software.

Y'all should avert using telnet if y'all can help it, but if you're connected direct to a device and information technology requires that you utilize telnet to set something up—well, that's what you have to do.

cipher: Permanently Delete and Overwrite a Directory

RELATED: Why Deleted Files Tin Be Recovered, and How Yous Can Foreclose It

The cipher control is mostly used for managing encryption, but it besides has an option that volition write garbage data to a drive, immigration its free space and ensuring no deleted file tin exist recovered. Deleted files normally stick effectually on deejay unless you're using a solid state drive. The null command effectively allows you lot to "wipe" a drive without installing any third-party tools.

To use the command, specify the drive you want to wipe like and so:

nil /west:C:\

Discover that there is no space between the switch (/west: ) and the drive (C:\ )

netstat -an: List Network Connections and Ports

The netstat command is particularly useful, displaying all sorts of network statistics when used with its diverse options. One of the most interesting variants of netstat is netstat -an , which will display a list of all open up network connections on their reckoner, along with the port they're using and the foreign IP address they're continued to.

RELATED: How to See What Web Sites Your Computer Is Secretly Connecting To

nslookup: Find the IP Address Associated With a Domain

When y'all type a domain proper name (say, into a browser accost bar), your estimator looks up the IP address associated with that domain name. Yous can employ the nslookup command to find that data out for yourself. For example, yous could type nslookup howtogeek.com at the Command Prompt to quickly find out our server's assigned IP accost.

You lot can besides perform a reverse lookup by typing an IP accost to observe out the associated domain proper name.

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This isn't a comprehensive list of all the commands you might find useful, but we hope information technology'due south given you some thought of the many powerful tools lurking under the surface. Have your ain favorites we didn't mention? Join in the discussion and permit us know!

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Source: https://www.howtogeek.com/168896/10-useful-windows-commands-you-should-know/

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