Bash Shell scripting...every Linux admin needs it to save time. One aspect of shell scripting is writing functions. Creating functions in your scripts allows you to create containers of code that you can reuse in one script or multiple scripts. This tutorial, with examples, shows you how to create functions. The article is a part of a free shell scripting course.

...you try to write {perl,php,java,...} code and forgetting all the time the brackets around functions, loops and if clauses and whereever you need them

"Find out how closures and lambda functions make programming easier by letting you define throwaway functions that can be used in different contexts. This article details how useful closures are as a functional programming construct within PHP V5.3 code."

A plotting tool is computer software which helps to analyze and visualize data, often of a scientific nature. Using this type of software, users can generate plots of functions, data and data fits. Software of this nature typically includes additional functionality, such as data analysis functions including curve fitting.

As all of you know that PHP has a large set of functions for the programmers. The list is so huge that we keep on learning each one of them day by day. There are some cases you would like to know them beforehand to use them in your app. These are those functions which may be famous for some, but largely people are ignorant about their existance. Here goes the list.

When you want to reuse functions in multiple scripts you can create a library which allows you to access those created functions.

This tutorial describes how awk can use operators to increment or decrement as well as other arithmetic functions. awk uses four arithmetic functions:
+ addition
- subtraction
* multiplication and
/ division.

There are already tons of written Snort rules, but there just might be a time where you need to write one yourself. You can think of writing Snort rules as writing a program. They can include variables, keywords and functions.

Last time, we advised you to use ditch the unsafe functions like strcpy and strcat, and use their safer replacements (strlcpy, strlcat) instead. However, there is a small problem with this that you might discover that your compiler (especially gcc) does not have these functions in their implementation of the c library (libc). Why is this so?