Sparse files are common in Linux/Unix and are also supported by Windows (e.g. NTFS) and macOSes (e.g. HFS+). Sparse files uses storage efficiently when the files have a lot of holes (contiguous ranges of bytes having the value of zero) by storing only metadata for the holes instead of using real disk blocks. They are […]
Posts on Programming
Tutorials and tips on programming related to Linux systems, Web and more.
64 posts in total.
How to Add Custom Content on a Receipt
This blog will explain about how to add a custom content in a Receipt which will be generated from MPOS in Microsoft Dynamics. Microsoft provides us with certain fields which can be put into the receipt. There are certain fields which a client will ask to show in the receipt. If the desired field is […]
Deploying ASP.NET Core 2.0 MVC application to Azure Web apps using Visual Studio 2017
Introduction In this tutorial, we will be learning as how to deploy .NET Core 2.0 MVC web application on Microsoft Public Cloud i.e. Microsoft Azure, using Microsoft Visual Studio 2017 v15.3 For novice Cloud developers, aspiring .NET / Cloud architects, and all other IT professionals associated with the .NET Core framework & Cloud computing, especially […]
Spring Shell Technology For Java development
This post is about the Spring Shell technology and its use in java. Experts of java development India have shared their best knowledge in this post for Spring Shell with the community people. If you have anything to ask, do it at the end. Technology: It is command line tool for Java applications to interact […]
Filter Salutation in Microsoft Dynamics CRM
In this tutorial, Microsoft Dynamics CRM India experts will teach you how to filter salutation based on Gender field in MS CRM. You can follow the step-by-step guide shared in this post to avail the results. Description- According to the requirement we need to filter salutation based on gender in contact entity. For this we […]
Dynamics CRM Consultants Explain How To Filter Sub Branch Lookup Field Value in CRM
In this blog Dynamics CRM consultants are sharing a step-by-step guide to explain how to filter another lookup field value based on one Lookup field value. In this Lead entity, they are having two fields Branch and Sub Branch and you will learn how they filter Subbranch based on Branch field. Based on one Lookup […]
Push and Pull data from Restful Service in Asp.net MVC Application using Angular JS
In this post, asp.net development India based professionals will explain the best way to manage the Restful service using AngularJS. They are explaining the push and pull functionality available in Rest service in simple steps. Read the article to know more. In this Post I am going explain how we can manage the Restful service […]
Parameterised AngularJS Routing in Asp.net MVC using $routeProvider
In this post, asp.net development India based professionals will brief you about the interesting feature of AngularJS, that I Routing. You will learn the method to split the single page into multiple views. For more info, read the article. In this article we are going to see one of the most useful feature of AngularJS […]
Quartz Implementation in Java
In this post, java development India based experts will explain the concept of Quartz. You will also learn the method of setting up the Quartz in this article. You can ask experts if anything bothers you. Technology ∞ Quartz is the open source Java technology for scheduling background jobs. If we want to execute the […]
How to Get Bash Script’s Own Path
Bash script may need to get its own path. In normal Bash script, $0 is the path to the script. However, when a script is sourced, such as . a.sh, a.sh‘s $0 does not give a.sh while the caller’s name. How to reliably get a bash script’s own path no matter whether the Bash script […]
Notes for Beginners of Software Development on Linux
Linux is a great platform for software development targeting servers or backends. In general, working on Linux is very productive. The problem that beginners on Linux face is the the learning curve is steep at the beginning. But believe me, after you get through the initial green steep learning step as in the figure below […]
Tutorial Video for “PHP Function for Fetching RSS Feed and Outputting Feed Items as HTML”
After the post A PHP Function for Fetching RSS Feed and Outputing Feed Items as HTML was originally published, there are some updates such as adding a simple RSS feed caching mechanism and supporting scanning content parts of the feed items for images. Recently, Webucator makes a great tutorial video on introducing the RSS to […]
Running a Command Upon Files or Directories Changes on Linux
Doing actions upon changes of files and directories is very useful. Examples like compiling a project after the source code files are changed, sending emails after important configuration files are modified, building the PDF after a TeX file is modified. On Linux, the inotify-tools provide good support for trigger actions after changes. In this post, […]
How to Get Available Filesystem Space on Linux: a C Function with a C++ Example
It is common for programs to write to files in filesystems on disks. However, what if the disk was almost full when your program writes to the filesystem on a disk? For systems software and mission critical programs, it is a better or must-to-do practice to check the available filesystem space before actually writing to […]
Profiling Vim to Find Out Which Plugin Makes Vim Slow
Vim is pretty fast and powerful. However, the core of Vim is (yet) single-threaded (some discussions and tries on porting Vim to be multi-threading, but not yet there). This means some functions that are slow will block Vim there and you have to wait for it. While Vim is fast, some plugins are not. When […]
A PHP Function for Fetching RSS Feed and Outputing Feed Items as HTML
I aggregate all my new posts from several sites into a single RSS feed. Last time I updated my homepage, I came across an idea why not showing these feed items directly on the homepage as HTML content. After some study, I got one single PHP function in my hand that fetches an RSS feed […]
A posix_spawn Example in C to Create Child Process on Linux
The posix_spawn() and posix_spawnp() functions create a new child process from the specified process image constructed from a regular executable file. It can be used to replace the relative complex “fork-exec-wait” methods with fork() and exec(). However, compared to fork() and exec(), posix_spawn() is less introduced if you search on the Web. The posix_spawn() manual […]
Keyboard Key Mapping for Emacs: Evil Mode and Rearranging Alt, Ctrl and Win Keys
Ctrl keys are important and possibly most frequently used in Emacs. However, it is painful on today’s common PC keyboards since Ctrl keys are usually in the corner of the keyboard main area. Why the key mappings in Emacs are designed like this? After it was designed, Emacs was commonly on the Lisp Machine keyboards […]
Git Merging FAQs
git merge is frequently used during development of projects managed by git. There are many common questions about git merge and I find most are solved and discussed on StackOverflow. Here, I summarize useful ones so that others who want to learn git merge need to do the search again. Merge, rebase, fast forward and […]
Cheatsheet: Git Branching with a Git Server
It is common to set up git servers to host git repositories. Branching is lightweight in git and a very friendly mechanism to manage code. Here, I summarize a cheatsheet of common git branching commands for working on repositories from a git server. This post assumes that you have basic knowledge with git. If you […]
