Tech-fuu

DNS(Domain Name System) என்றால் என்ன ? ip முகவரிகள் மூலம் தான் நெட்வர்க்கில் உள்ள கணினிகள் மற்றதை தேடி அதனை தொடர்பு  கொள்கின்றன . ஆனால் நம்மால் பல ip முகவரிகளை நினைவில் வைத்துக்கொள்வது கடினம் . உதரணாமாக dns இல்லை என்றால் நீங்கள் கூகிலை அடைய ஒவ்வொரு முறையும் 74.125.135.105 என்ற ip கொடுக்க வேண்டும் . dns இந்த வேலையை சுலபமாக்குகிறது . ஒவ்வொரு முறையும் இந்த ip முகவரிஐ கொடுப்பதற்கு பதில் அதன் domain name ஐ கொடுத்தால் dns அதற்கு இணையான ip யை கண்டுபிடித்து அதனுடன் இணைக்கிறது . rDNS(reverseDNS) ip ஐ டொமைன் name ஆக மாற்றித்தருகிறது . எதற்காக openDNS? நம் ISP தரும் dns ஐதான் பெரும்பாலும் பயன்படுத்துவோம் . நமது விருப்பத்திற்கு ஏற்ப இதனை மாற்றிக்கொள்ள முடியும் . ஓபன் dns என்பது இலவசமாக கிடைக்கும் ஒரு சேவை . இது நமது ஐ எஸ்பி தரும் dns விட பல விதங்களில் நமக்கு பயன் அளிக்கும் . உதாரணமாக ஐ எஸ் பி dns விட வேகமாக தளங்களை இணைக்கும் , தவறாக

Date: 24-11-2013 Time: 10 am to 12 Location: Kailasanathar Temple, KPM Today we had a meet at kailasanathar temple, Since last few months we didn't have any activity. so we discussed about the current status of our lug community and how to refine this problem. some old members also participated in the meet and suggested some good ideas. And we finally come to a conclusion to do some frequent activities

hi,  this one is a quick view of three tools at instance grep, sed and awk   GREP: grep tool is used to find the pattern in a text file. for example $ grep 'mani' /etc/passwd this will show the lines which contains the pattern 'mani' in it.

This one is pretty simple trick.. in ubuntu whenever i want to use internet i use wvdial. it is a simple tool to make a connection by ppp dialing. i'm using really a bad network.. :( it will sometimes automatically disconnect.. morever it will not make my connection quickly.. i have to use the command sudo wvdial repeatedly.. sometimes more than 7 or 8 times.. so this simple command help me to resolve this problem. we have to use while loop to do this command infinite times. just type

It has been a long time... my rest hours are reduced i only sleep for 5 to 6 hours a day.. so i can't post frequently.. sorry friends.. my university is a good place to refine myself. yes..! thoughts about my programming computers are refined there.. i always wanted share my experience.. but i feared of thinking that it will helpful for you or not.. most of us don't like to hear stories of others. so i stopped blogging and of course having less time.. i have earned some good friends there... who are interested in open-source technology.. very few of us only know the linux platform.. this semester mini project also in open softwares like mysql, postgrey sql i will start blogging my experience if you are interested.. regards, Mani G

After a long wait i have joined mca in anna university guindy campus. here i'm posting my experience in short: (hope helpful for some students) If you have a under graduate degree and maths at HSC you can join MCA. Every year anna university conducting TANCET entrance exam. you have to write this exam then only you are eligible to get in to mca/mba counseling.

Today i have changed my dns server name to opendns. which is alternative to default dns and it provide more secure, faster browsing experience. What is opendns? OpenDNS is the leading provider of Internet security and DNS services Industry leading malware and botnet protection Award winning Web filtering Faster, reliable, more secure DNS Ultra-reliable, globally distributed cloud network Simple, Smart, Easy How to configure opendns in ubuntu 12.04: open terminal and type sudo nano /etc/resolv.conf enter your password and change these lines   nameserver 208.67.222.222  nameserver 208.67.220.220 to use google public dns use 8.8.8.8, 8.8.4.4 instead of 208.67.222.222, 208.67.220.220 simple isn't..! now see your facebook load faster than before. opendns comes with parental control, so never worry about unwanted websites, and your childrens are safe now. to check your dns changed successfully goto welcome.opendns.com