In this recipe, we forward messages from one system to another one. This is used in a number of cases:
the local system does not store any messages (e.g. has not sufficient space to do so)
there is a (e.g. legal) requirement to consolidate all logs on a single system
the server may run some advanced alerting rules, and needs to have a full picture or network activity to work well

You know those cool graphs and statistics you can get for a repository on github? The things is that (unfortunately) not all git repositories are hosted on github for various reasons. This is the PHP tool for rendering graphs for your repository that can be hosted anywhere, and it looks great.

The example screenshots are graphs generated for the jQuery repository.

HTML5 is the newest revision, and by far the most interesting, of the Hyper Text Markup Language. is In this article I have compiled awesome HTML5 code snippets to take your website to the next level.

Have you ever seen a train running on Linux command line? Have you ever seen ‘Tom and Jerry’ on Linux command line? Well, working on Linux command line is not that serious always. There lies a fun factor too. Here in this space, we shall discuss the idiosyncrasies of Linux command line.

Assumption: Ubuntu Linux is used for all the examples in this article. The command line utilities described in this article may or may not be present by default on your Linux system.

Rainbow is a code syntax highlighting library written in Javascript.
It was designed to be lightweight (1.4kb), easy to use, and extendable.
It is completely themable via CSS.

The coding world moves pretty fast. Since my last coverage of Laravel, Laravel Essentials, much has changed for the better. While plenty of that course still applies, a variety of adjustments and additions have been made to the framework. This course will get you up to speed on those changes as quickly as possible.

Wireframing tools are commonly used by many designers, developers and project managers to visualize application flow and sitemaps. While it is hard for a team or clients to understand the written description of the look and feel of the website or application,wireframing tools make it easy for the team and the clients to imagine what the structure of the website or application should look like.

The prototyping process should be fast and does not take away much time from the project, because it can be edited and modified many times until reaching the final project structure. Therefore, many designers and developers look for free wireframing tools and online mockup tools to be able to create a project wireframe quickly and share it with the client or the rest of the team.

Here, you can find 15 free wireframing tools for visualizing ideas and project structures. Some of these tools are totally free, while others provide a trial or limited version of the paid one. You can review these wireframe tools and share with us your feedback and ideas. If you know other wireframe and mockup tools, share it with us in the comments below.

This tiny (5KB, < 200 lines) JQuery Bootstrap plugin turns any DIV into a WYSIWYG rich-content editor, inspired by CLEditor and bootstrap-wysihtml5. Here are the key features:

Automatically binds standard hotkeys for common operations on Mac and Windows
Drag and drop files to insert images, support image upload (also taking photos on mobile devices)
Voice dictation input (only in Chrome)
Allows a custom built toolbar, no magic markup generators, enabling the web site to use all the goodness of Bootstrap, FortAwesome and so on...
Does not force any styling - it's all up to you
Uses standard browser features, no magic non-standard code, toolbar and keyboard configurable to execute any supported browser command
Does not create a separate frame, backup text areas etc - instead keeps it simple and runs everything inline in a DIV
(Optionally) cleans up trailing whitespace and empty divs and spans
Requires a modern browser (tested in Chrome 26, Firefox 19, Safari 6)
Supports mobile devices (tested on IOS 6 Ipad/Iphone and Android 4.1.1 Chrome)

The Git Basics tutorial provides a succinct overview of the most important Git commands. First, the Setting Up a Repository section explains all of the tools you need to start a new version-controlled project. Then, the remaining sections introduce your everyday Git commands.

By the end of this module, you should be able to create a Git repository, record snapshots of your project for safekeeping, and view your project's history.

Creating a website or application is not limited to deciding what to put on the homepage or what photos to use to match the site’s subject. Visual designs are necessary to attract searchers and be user friendly. Therefore, project developers must first be able to visualize a good output and see how it could get the interest of people. Well, this requires lots of creativity and project managers, web designers, and developers need wireframing and prototyping tools to put up their proposed sitemaps and application flow.

Since it is already 2013, what are the latest prototyping and wireframing tools that can help designers and developers take their workflows and designs to the next level? Of course, technology does not stop advancing so there are really a lot of new tools out there – and here are some of them:

After I install a new version of Linux, I usually take a good look at the screen. Does it have a task bar? Can you find your window after it was minimized? Lately, some developers have been struck by some sort of amnesia brought on by the stress created by the mobile sector offerings.

Fortunately, in Linux we do have plenty of other choices. I will describe some of them in this article, and I’ll attempt to measure the RAM memory requirements. I use free command in an xterm before and after the graphic environment is started on a separate X server (Xephyr). The computer is an older 64-bit machine, running Ubuntu 12.04 with LXDE as desktop environment.

Note: the tool I use to set it all up is virtenv. I would say it is pretty much experimental at this moment, alpha stage maybe early beta. It sets up a Xephyr xserver running Joe’s Window Manager in a Linux kernel container (LXC). I only have to shut down JWM, apt-get install the new window manager, and run it. The beauty is the container works in a separate filesystem, and it will not overwrite the real filesystem on my computer.

Let’s assume you have a physical machine running a Linux system, and you would like to convert this system into a virtual KVM/QEMU machine, keeping everything as close to the original as possible. What follows is my approach.

The first thing we need is a raw image file which mirrors the exact layout of the physical hard drive in our physical server.

In our example scenario, the physical box has one hard drive at /dev/sda with a /boot Partition on /dev/sda2 and a physical LVM volume on /dev/sda3. This LVM volume houses a volume group with two logical volumes, one of them housing the root partition /, and the other one being unused. Also, /dev/sda1 is unused. Grub is installed into the Master Boot Record.

Code review can be a bit of a recipe for drama. There was a large-ish amount of drama in a close project quite recently that stemmed from patch review, and it got me thinking about how we handle this in free software.

In free software code review, along with other practices that we call “agile practices” (such as continuous integration, unit testing, behavior driven design, test driven development) is a relatively new thing in some projects, especially those on the desktop stack.

I love reading git logs! First, because it reveals the people and processes behind software. Software is not just a bunch of code that works (or more commonly, doesn't work...) - it's also a bunch of people crafting something together for a long time. Not only adding features and fixing bugs, but they also refactor, do dirty tasks and ugly workarounds, explaining their motives in the commit messages.

A second, more concrete reason - quick access to git history helps me make better software. It helps me find out when and how exactly a bug was introduced, learn whom to talk to about a certain change or code, or simply find a desired code snippet in a huge repository - even if it was already deleted. Am I stating the obvious here? I guess so! but I do believe that sometimes this tool is underestimated and underused.

Of course, the better we know git's secrets, the more effective use of git history we could make. I'll try to share here some useful tricks I've collected in the recent years... I bet you know some; I believe you may still find some of them useful.

I can still remember the old digg.com user profiles with dynamic avatar cropping via JavaScript. Their user interface was clean, easy to use, displayed a sample before you cropped, and would auto-update as you changed the selection box. I have always admired this design and have been on the lookout for a great jQuery plugin which can offer similar features with less custom code.

After toying with Jcrop I have come to really support this plugin. The codes are very small and do not require a whole lot of setup (although there are plenty of optional settings). My demo example will include dynamic avatar updating in real-time, along with a PHP rendering script. I think the amount of new social networks and websites offering user profiles should definitely take this UX technique into consideration.

This entire site, like many, is built in PHP. PHP provides the power to simply 'pull' content from an external source, in the case of my site this is flat files but it could just as easily be an MySQL database or an XML file etc..

The downside to this is processing time, each request for one page can trigger multiple database queries, processing of the output, and formatting it for display... This can be quite slow on complex sites (or slower servers)

Ironically, these so-called 'dynamic' sites probably have very little changing content, this page will almost never be updated after the day it is written - yet each time someone requests it the scripts goes and fetches the content, applies various functions and filters to it, then outputs it to you...

So what is awk, and what does it have to do with UNIX? Plenty, as you'll soon learn. It is a tool that helps you get certain tasks done in the UNIX shell. But it's no mere tool; it's so developed that it's a programming language in its own right. Keep reading to learn how to make the most of awk.
The core idea in the creation of any programming/scripting language is to make it as natural and as simple as possible. Still, it should allow the construction of advanced expressions for solving complex problems. The creators of the UNIX Shell script language did not forgot these two simple principles. For the sake of simplicity some parts are broken down into multiple sub-parts. Sometimes these sub-parts evolve and grow to form their own programming language.

A prime example for this is Awk. The name "awk" comes from the starting letters of the names of the three creators: Aho - Weinberg - Kernighan. These people defined it as "awk, a pattern scanning and processing language." Besides setting a concrete purpose for the tool, this also underlines the fact that awk has its own syntax and rules. With this, it becomes a programming language on its own.

Awk was designed to scan and process files like the .cvs, where data are organized into columns and rows. However, doing the same with any other source of organized data in this structure is a valid option (as in the case of the command ls -l). The principle behind awk is to divide an input stream into rows and records and make the changes on this.

Last time I presented the stream editor, which accomplished the row splitting. However, compared to the sed, awk is a much more complex, powerful and more capable language. The record extraction allows us to throw away the unnecessary and process only the useful information from a file/UNIX tool.

Awk is a scripting language, and is best for solving small everyday problems. Its three creators do not recommend it for use in big, complex problem solving. However, there are long lists of problems that can be solved with it. It also has a couple of other advantages when compared to other tools, like the sed. For instance, it can work with real numbers and follow a very C-like syntax.

In this and a future article I will try to present it as concisely as I can without leaving out any crucial parts of awk. Remember that this article is only designed to introduce to you this language on a basic level. I do not intend to show you every corner of the scripting language. Nevertheless, this will be enough for you to use it in the everyday problems you may come across in the future.