Tutorials - Page 5 of 5

If you are using Google feedburner for rss feeds, you can setup feedburner email subscription newsletter within few minutes. I have been using it for quite read more

Netcat (nc) is pretty powerful command line tool on Linux & Mac and can be used to send data on network. It can be quickly read more

If you have been using wordpress for directly serving rss feed and have recently migrated to feedburner, then some of your users are still being read more

Adobe has a debug version of flash player which lets you view the flash log messages when you run a flash file in your browser read more

When you create a feed your your wordpress blog you get a url of the form http://feeds.feedburner.com/feedid. You can change feeds.feedburner.com to your own domain. It read more

When you install wordpress you automatically get feed or rss setup at url /feed/ (or /rss/). It seems to be a good option to continue read more

Mac lets you convert text to speech and play it. It can be done in many applications (Chrome, Firefox and other browsers, textedit, etc.) by read more

Mac lets you convert text to speech using command line utility “say”. It also lets to generate an audio file in various formats and voices. read more

EBS stands for Elastic Block Store and it provides block level storage volumes for use with Amazon EC2 instances. Amazon EBS volumes are designed to be highly read more

YouTube automatically generates caption for the video a publisher has uploaded on YouTube. But these captions may not be very good depending upon the accent read more

Youtube video link looks something like this: http://www.youtube.com/watch?v=gdXN0DXMd6Y and when you open it in any browser, it starts from the beginning. Youtube also lets you create a read more

[Update: Authorship is no longer supported by google. You may also want to visit Google rich snippet documentation.] Google displays author information in search results read more

When you create Amazon EC2 instance, you are given a RSA private key to access the instance. On Ubuntu Linux the key is for default read more

When we browse a web site, the browser first do a DNS lookup to find the IP address of the domain name. We can override read more

In a Linux (or other Operating System) process when a subroutine is called, the memory for local variables comes from stack area of the process. read more

HTTP expire header can be used to set a expiry time for an image, css or any other content type. The browser does not fetch read more

ViewVC is a browser interface for cvs and subversion version control repositories. If you are using svn then its a great tool to browse your read more

Migrating a site from one domain to another can be a daunting task. But if we create a clear plan then it is a manageable task. read more

You may need ssl for your site for multiple reasons. I needed it for facebook apps. So my requirements are not so strict. For building read more

Facebook username for vanity url is the name you get for your page which appears after “https://www.facebook.com/”. Having a username for your page makes it easier read more

Svn (Subversion) is one of the popular options for maintaining source code versions and revisions on Linux. Here are the steps to install and setup read more

Sometimes we want to access a web site from a different location or ip to see how various things appear on the site. There can read more

One of the main activity a webmaster has to perform is to monitor and fix 404 pages (not found pages) on the web sites. When read more

Often we install many facebook apps and later find out that these apps start posting to our wall without asking us. At the time of read more

ApacheBench (ab) is a very handy webserver benchmarking tool which can be run from command line. It is extremely simple to use. A quick outcome read more

It is a quick tutorial on using color palettes (or swatches) and later creating our own custom palettes in Inkscape. Inkscape is a vector graphics read more

WordPress facebook plugin lets you embed facebook comment box in your posts and pages along with many other features. One biggest benefit of facebook comment box read more

If you have Google adsense account then you can use Google custom site search for your website. I’m using it on a wordpress site but read more

W3 total cache by Frederick Townes is probably the best wordpress cache plugin. Setting it up for best outcome can take sometime. But once you get read more

WordPress crons are different from traditional Linux or Windows crons. Traditional cron runs as independent processes at regular interval. WordPress crons are php hooks which read more

Alexa is a powerful tool for getting high level insight into any website. It can be used to research websites related to a specific topic read more

Dropbox can serve files in the Public Folder (and other folders as well) over http. To view the file over http users don’t need to read more

Almost all of us spend a great deal of time deciding what domain to use for our site or venture. Moreover once you pick a read more

Many times you want to remove urls from google index. There can be many reasons for doing that. Some of the reasons are: A page read more

Google provides extremely useful Search console (webmaster tools) to perform various activities and view stats of your web site. Here are some reasons why you read more

I recently noticed that my site (https://infoheap.com/) which was hosted on AWS North Virginia data center was very slow. I was accessing it from Airtel read more

Css position can be used to place a text over an image. This can used to place some text like alpha or beta over a read more

Google Chrome Browser has powerful developer tools to debug css on any web page. It can also be used to quickly make minor changes in read more

Fitvids (github link) is an open source javascript library built by Chris Coyier and Paravel which makes the width of videos in a web page fluid. To be read more

Cross site scripting (XSS) happens when some input on a page (through GET or POST request) is not properly escaped before displaying. If that happens read more

Update: Google seems to have removed the option for old gmail inline compose interface. So you cannot switch to old gmail compose window. Gmail recently read more

Rsync can be used to automate the production releases for wordpress or any other site. I maintain two wordpress sites – one for development purpose and one read more

Apache log can give you lot of insight into the performance of your site. The default configuration of apache does not log the page serving read more

A quick tutorial to show how to use layers in Inkscape to generate image frame and use Jquery to create a simple animation. Inkscape layers read more

It is a quick tutorial on creating a very simple svg (scalable vector graphics) logo using Inkscape and then later export it to png format. read more

There are multiple options available to handle redirects in wordpress. A redirect is a way to tell the users and search engines that a page read more

Using textarea in wordpress can cause lot of issues as wordpress automatically converts newlines to line-break (<br>) and paragraph (<p>) tags. Often switching from text to read more

WordPress comes with a default search which searches posts and pages from your site. It works pretty decent. Here is why you should consider switching read more

Comic strips are fun way to add humour and communicate an idea faster to the readers. There are many tools to generate comic strips with read more

I noticed that google bot is crawling javascript and css regularly from by wordpress blog site. Here are some entries from my apache log: 66.249.75.66 read more

Screenflow 4 (I’m using 4.0.2 version to be precise) lets you export your screencast to mp4 format which you can upload to youtube and may read more

There are many plugins available for WordPress which lets visitors share the post or current page on various social networking sites like Google Plus, Facebook, read more

When it is required to have more than one wordpress installations it can get little tricky. There are multiple way to do that. Do multiple read more

Maintaining a wordpress site can be pretty involving task specially when you have so many plugins with regular updates. Many time you have to experiment new plugins, read more

Scalable Vector graphics is getting more popularity in online world as more and more browsers support svg now. Most images we see on web (.png, read more

WordPress is a great blogging platform and there are plugins for pretty much everything you need. But with too many plugins it affects the performance read more

[Update: This post is applicable for Amazon classic infrastructure. Now you should use Amazon VPC infrastructure and steps may be slightly different. We’ll soon write read more

[Update Feb, 2016: This article is based on old version of Google analytics and is now deprecated. Please visit Google cross domain tracking page for read more

I have been doing some research on whether to use www or not in domain of the urls of the site. If you setup wordpress read more

Apache logs contains pretty useful information about various visitors and bots coming to your site. Here is how a typical apache log entry looks like: read more

I guess most of us maintain a test or sandbox blog to try out new plugins and do experiments which we can’t afford on main read more

Using git/github may look like a daunting task but once you set it up, it is not that difficult. Here are quick steps to get read more

Twitter allows you to change the twitter handle (or username) anytime. This option comes on account page (https://twitter.com/settings/account)  as shown below.The new user has to read more

A facebook page can be deleted by the manager of the page. You can also unpublish a page which is a better option if you read more

Some gmail advanced search tips which can be useful if you are heavy gmail user. File all unread messages in inbox is:unread in:inbox Find a read more

I was having this problem since last few days. My mysql server was getting killed on its own on aws/ec2 micro instance. So far I read more

Installing too many plugins can hurt wordpress blog performance as plugins may lead to more queries. One quick way to check the impact of a read more

I have been looking at many free and paid wordpress themes since I started blogging. There are some pretty good themes out there for you read more

YouTube has a partner program where video creators can monetize their videos using google monetization program. Your videos must adhere to Google guidelines and should read more

Sometimes we need to override some existing css or write some new custom css for the wordpress blog site. This can be pretty handy for read more

The plugin (SSH SFTP updater support) is pretty handy to update wordpress plugins and themes using ssh specially if you use private ssh key to read more

Unix utility nc (netcat) is a pretty handy utility for many network tasks. One such use is to see what headers are being sent by read more

When mysql server is hosted on a cloud environment like amazon aws/ec2 or rackspace, connecting to it using mysql GUI tools may not be possible without read more

Migrating wordpress from root to subdirectory is not a difficult task but should be done carefully. Here are the steps which can be followed. Terminology read more

When I used Google analytics SDK v2 for mobile android app, I was pretty impressed with it. With very little code I was able to read more

Here is a small code snippet to demonstrate how to parse robots.txt and crawl a web page in python using robotexclusionrulesparser module url = “http://www.foo.com/bar” read more

If you have mysql server on AWS EC2 instances, you may need remote access to mysql server form a specific IP. Note that if you read more

Using facebook login (fbconnect) on your website or blog requires you to create a facebook app and configure it with few details. The advantage of read more

Often when you get an email from someone online Google gtalk (on mail.google.com) starts showing that contact in your frequent friends list. That increases the read more

My ipad2 home button was intermittently becoming unresponsive. Here are various things I tried after talking to Apple support and reading up various support threads. read more

Facebook has an interface to search existing open issues and file a new one if you can’t find the issue/bug which describe the problem faced read more

There are multiple ways to install wordpress. I won’t go into that here. You can get some installation information here. Once you set it up read more

I found camtasia to be pretty powerful tool to generate screencast videos. I needed it to generate gameplay video of one of the app I read more

[Update: March 2016] This article is based on old YouTube UI/policies. For latest documentation, please visit Get a custom channel for your channel. These are read more

Sometimes we want to iterate over a dictionary in sorted order of values. We can do it by using key argument to python sorted() method read more

Here are some cool python one liners. Parse apache log using python: print 5th field python -c “import csv,sys;f=csv.reader(sys.stdin, delimiter=’ ‘); print ‘\n’.join([r[5] for r read more

If you want to try out stuff as root which can potentially break you site, you are always scared of trying that on your main read more