Chef-Solo is an open source tool that runs locally and allows us to provision the guest machine using chef cookbooks without the complication of any chef client and server configuration. In this post, we will learn to execute a simple recipe which will create a file with some content inside /tmp directory using chef cookbook recipe. To start with, we will create ...

This article is part of our Academy Course titled Apache HTTP Server Tutorial. In this course, we provide a compilation of Apache HTTP Server tutorials that will help you get started with this web server. We cover a wide range of topics, from installing the server and performing a basic configuration, to configuring Virtual Hosts and SSL support. With our ...

When you interact a lot with command line tools, such as : docker , docker-machine and docker-compose, command line completion (using the tab key) is a must. Let’s have a look at how to enable bash completion for those docker command line tools Mac user ? install bash-completion I suppose you already use brew on Mac to install additional packages; ...

Digikam is a very powerful and convenient KDE application to manage a photo collection (batch renaming, batch auto rotate, modification of geoexif, etc.). Thing is, Digikam is mainly targeted at Linux distributions; and I’m currently not using a Linux based OS (bad, bad, bad…); so I could follow along the official instructions, such as : get it from mac ports ...

I’ve been going through some old notes and came across a reminder of setrlimit(2). This is a C system call that allows an application to specify resource limitations on a number of important parameters: RLIMIT_AS – The maximum size of the process’s virtual memory (address space) in bytes. RLIMIT_CORE – Maximum size of core file. RLIMIT_CPU – CPU time limit ...

Of course we can manually download the modules from Puppet Forge and install it but it becomes messy as you have to manually maintain the dependencies between the modules which definitely makes your repository bigger than necessary. Already I briefed about librarian-puppet  in my Blog At Xebia, still to provide little more context, it manages the Puppet modules your infrastructure depends on, ...

I am a real fan of learning Linux commands by examples and from my personal experience it will really help to see some Linux tar command examples. But first, a brief bit of background information. The name “tar” stands for “tape archive”. As that name implies, originally it was a command that Unix administrators used to deal with tape drives. ...

This article is part of our Academy Course titled Apache HTTP Server Tutorial. In this course, we provide a compilation of Apache HTTP Server tutorials that will help you get started with this web server. We cover a wide range of topics, from installing the server and performing a basic configuration, to configuring Virtual Hosts and SSL support. With our ...

These are my steps in migration from bash to zsh. I’m documenting these to keep the future reference for me (and possibly other readers as well). Motivation? Check out the Slideshare presentation: Why Zsh is Cooler than Your Shell Current shell to find out the current shell: ps -p $$ it’s useful during migration to make sure the new shell ...