Command Prompt Tutorial 6 – ADVANCED

Posted on 26/09/2009 by


wadup people!

today we finally talk about FSUTIL and IPCONFIG

its gonna be a long and informative post so read on …


this command is used to get the information of your network    setup or your internet connection. If you just type ipconfig on your cmd, it will give you a quite comprehensive list of all your network interface and their ip address. using its switches though gives you a whole different set of info. for example if you type ipconfig /all it gives you all the info you possibly need on your netowrk and internet set up: showing all the information related to each of your network cards.


there are many more useful ipconfig functions:

ipconfig /release and ipconfig /renew – this command basically tells your adaptor to drop and renew the current ip adresses. this is very useful in networks that use DHCP (dynamic host configuration protocol … phew what a mouthful) to distribute IP addresses. it basically forces your system to give up its present IP address and get a new one from the DHCP (i ain’t gonna write the damn full-form again) server. it helps resolve lot of network problems !! so try this next time u got internet problems!

ipconfig /flushdns – this command is another useful one but first I have to start an explaination of DNS

Now … lets see … DNS is the system that maps IP addresses to their respective internet addresses (like . this is the basic defintion. Now your computer stores a resolver DNS cache .. which stores the IP addresses of ur most frequently visited sites. this lets your system bring up frequently visited sites faster! without having to check with DNS servers to find out what ip address is associated with or some other website.

If you are in a network which uses its internal DNS server. what happens if the server changes or goes down?? its not really what you want… if you query a non existant DNS server it aint gonna help. and even if you change the location of your DNS server, your system will ignore it in favour of the shit in your cache.

thats where ipconfig /flushdns gets in. it deletes your cache and you can start from scratch!! your system will now recheck its settings to find out which DNS server it should be going to. there you go! No problemo.!

phew!! u know what ! i will rite about fsutil tomorow!

good night!