Introduction to Ansible prompts and runtime variables

This tutorial is part of a series we dedicated to Ansible. Previously we talked about the Ansible basics, then we focused on some Ansible modules we can use to perform some very common administration tasks, and we also talked about Ansible loops. In this article, instead, we learn how to create interactive prompts we can use to ask for user input and how to pass variables at runtime.

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Introduction to Wake On Lan

Wake-on-lan (also known with the “W.O.L” acronym) is a standard ethernet feature which allows a machine to be woken up on the reception of a specific type of network packet (the so called MagicPacket). The main advantage of this feature is that it allows us to keep a machine in a low power consumption state, and be accessed only when needed.

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Introduction to YAML with Examples

YAML is a data serialization language. The name itself is a recursive acronym which stands for YAML Ain’t Markup Language. It is specifically designed to be human-friendly, easy to read and write, to represent settings and data structures and to work well with modern programming languages.

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How to use and install Rofi on Linux tutorial

Rofi is a free and open source application typically used in the context of very minimal graphical environments on Linux (simple windows manager like i3, instead of full fledged desktop environments like GNOME or KDE). Rofi has multiple functions: it can work as a window switcher, an application launcher or a run dialog, and can be used as a replacement for dmenu.

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How to tune Linux extended (ext) filesystems using dumpe2fs and tune2fs

The ext2, ext3 and ext4 filesystems are some of the most known and used filesystems specifically designed for Linux. The first one, ext2 (second extended filesystems) is, as its name suggests, the older of the three. It has no journal feature, which is the biggest advantage of its successor over him: ext3. Released in 2008, ext4 is the more recent, and currently the default filesystem on many Linux distributions.

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