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gihan s blog my tech world gihan s blog my tech world home about gihan gihan uk 14 07 2020 hi all i m moving to my blog to a new domain name please find latest updates on gihan uk thanks gihan de silva comments leave a comment categories uncategorized switching to a third party domain name system dns 31 12 2011 hi everyone today we will discuss on domain name systems and usage of them first lets see what is dns dns stands for domain name system and dns is actually a database system that handle ip addresses and related domain names when we type a web address and hit the enter key the isp internet service provider will look up the dns for requested domain name then the dns will return and direct to the correct ip address then we will see the requested web page usually your internet service provider maintains a dns server for handle the dns quires so you don t have to worry about that it hold a list of all the ip addresses and domain names within the network and a cache of ip addresses which recently accessed computers outside the network this dns servers are also responsible for your internet speed but sometimes you may realise your internet speed is not enough most of the time this happens not because of your bandwidth but because of your isp s slow dns server because some ips s don t pay much attention for expanding dns server resources as clients we can do something to speed up our internet speed ourself that is switching to a third party dns here is list of some great dns servers open dns 208 67 222 222 208 67 220 220 google public dns 8 8 8 8 8 8 4 4 bitgravity edgecast cdnetworks as a example lets see how to configure open dns for ubuntu computer first click on network icon and go to edit connections then you will see a window like this select your existing connection or you can create a new one then click edit in the dns servers field type these two ip addresses with comma separated 208 67 222 222 208 67 220 220 and follow the same procedure for other dns service providers if you are interested and the related ip addresses to configure are in the above list after set up the connection check whether you actually use the open dns so click on network icon and go to connection information now open firefox and try to load a web page then you will notice your internet speed has increased ok now it s all for today and this is the last post for this year and this is the last day of 2011 and i wish you very happy new year for all happy 2012 thank you gihan de silva gihansblog com 6 878075 79 896879 comments 6 comments tags bitgravity cdnetworks dns domain name system edgecast gihansblog com google public dns open dns categories dns joomla 1 7 installation with xampp problem solved 1 11 2011 hi recently joomla 1 7 was released and obviously that is an excellent product and new features also added if you need any guide regarding installation these articles may help you i think how to install and configure joomla 1 6 with xampp on ubuntu 11 04 though this is joomla 1 6 there are not different between installation of 1 6 and 1 7 so thought not to add a new post on it how to install xampp on linux ubuntu 11 04 how to run xampp server on windows with a flash drive portable xampp in joomla installation on xampp some guys are talking joomla is giving some errors with xampp actually they are not errors they are warnings is the nature of the software to give warnings in standalone software solutions we normally do something called error handling right we need to care about errors but we don t need to care warnings too much so simply we can ignore them now the problem arises how to turn off the warnings i think now i have entered to our today s topic d first you need to find php ini configuration file on your xampp installation it may be located at your in windows c xampp php php ini in ubuntu linux opt lampp etc php ini then open it on a suitable text editor now find error_reporting on php ini ctrl f and change it s value to e_all e_strict e_all e_deprecated there are three options on error_reporting by default this value may have e_all e_notice or e_all e_strict default value e_all e_notice development value e_all e_strict production value e_all e_deprecated in first two cases xampp will show errors and warnings these things are not good when considering production level that means a live web site should not give errors for user but it may useful considering development of web site and you need to find display_errors on php ini file and change it s value to display_errors off to make it clearly work now save the work and restart the xampp server joomla will work without any errors thank you gihan de silva gihansblog com 6 878075 79 896879 comments 6 comments tags erorr gihansblog com joomla warning xampp categories joomla a shell script for renaming large number of files in linux 29 10 2011 hi today i m going to blog about a very simple shell script that may help you guys a lot no big deal its very simple one it was very helpful to me once i had to rename a large number of images of kim kardashian so then i realise it will very easy doing it with a shell script rather than manually rename it bin bash author gihan de silva gihansblog com rename script rename sh clear x 0 for i in ls jpg do x expr x 1 mv i kim_kardashian x jpg done echo rename done code explanation bin bash this is how always a shell script starts clear this line clears all the things already in the terminal window x 0 this line define and declare a variable for i in ls jpg this line starts a loop and it will list down all the jpeg jpg type images x expr x 1 this line increases the value of x by 1 mv i kim_kardashian x jpg this line renames all the files according to a sequence like kim_kardashian1 jpg kim_kardashian2 jpg kim_kardashian3 jpg and you can just make kim_kardashian x jpg like my_file_name_ x jpg so that s it and to run this shell script put rename sh shell script into your file folder directory then open terminal window ctrl t go to your file folder through the terminal then type chmod 755 rename sh to get the permission then run it by typing rename sh now you will see files have renamed d you can download the shell script from here thank you gihan de silva 6 878075 79 896879 comments 4 comments tags linux script shell shell scripts terminal categories shell scripts previous entries email subscription enter your email address to subscribe to gihan s blog and receive notifications of new posts by email email address subscribe join 22 other subscribers subscribe in a reader blog stats 234 980 hits gihan s blog on google like gihan s blog like gihan s blog categories android 1 announcement 1 apache tomcat 1 blogging 1 boot loader 1 c programming 5 code blocks 4 glade 5 graphical user interface 5 gtk 4 dns 1 image processing 3 java 5 joomla 2 linux softwares 1 shell scripts 1 tech people 1 uncategorized 1 windows softwares 1 xampp 5 xampp on linux 3 xampp on windows 1 category cloud android announcement apache tomcat blogging boot loader code blocks c programming dns glade graphical user interface gtk image processing java joomla linux softwares shell scripts tech people uncategorized windows softwares xampp xampp on linux xampp on windows latest tweets tweets by gihanmalan resent posts gihan uk switching to a third party domain name system dns joomla 1 7 installation with xampp problem solved a shell script for renaming large number of files in linux how to create a gui graphical user interface using c programming language part 5 how to create a gui graphical user interface using c programming language part 4 how to create a gui graphical user interface using c programming language part 3 how to create a gui graphical user interface using c programming language part 2 how to create a gui graphical user interface using c programming language how to change the boot loader post calender june 2026 m t w t f s s 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 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