beginner

gitbook editor linux - how to start

How to run GitBook Editor on Linux

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Did you ever wanted to write and publish book? With GitBook you can create ebook using markdown syntax and with few clicks publish it in multiple formats such as PDF, EPUB, HTML or MOBI. GitBook also allows to split the workload among multiple contributors by using git distributed revision control. In this article we show how to run GitBook on Fedora and Ubuntu Linux.

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Puppy Linux desktop

Puppy Linux Download

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Puppy Linux specializes in being a super lightweight desktop distribution with user friendly features. The entire operating system only weighs in at about 300 MB and its system requirements are incredibly small.

It’s a great distro for restoring an old computer or providing a simple interface to casual PC users. For other most popular Linux distributions please visit our dedicated linux download page.

Puppy is simple and straight forward, similar to Ubuntu and Linux Mint in this regard. However, it comes with far fewer packages and leaves a much smaller footprint. Other distributions feel bloated when contrasted with Puppy.

Puppy Linux is more accurately defined as a collection of distributions. There are multiple “puppies” available for download, including versions based on Slackware, Ubuntu, and Raspbian. That’s what has been officially released, but there are a slew of community “remasters” available as well, called “puplets”. As you can see, Puppy likes to coin a lot of their own terms.

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How fstab works – introduction to the /etc/fstab file on Linux

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The /etc/fstab file is one of the most important files in a Linux-based system, since it stores static information about filesystems, their mountpoints and mount options. In this tutorial we will learn to know its structure in details, and the syntax we can use to specify each entry in the file.

In this tutorial you will learn:

  • How to use the fstab file to provide static filesystem information
  • How the fstab file is structured
  • What is the purpose of each entry field in the file

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dd-manpage

How dd command works in Linux with examples

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Dd is a very powerful and useful utility available on Unix and Unix-like operating systems. As stated in its manual, its purpose is to convert and copy files. On Unix and Unix-like operating systems like Linux, almost everything is treated as a file, even block devices: this makes dd useful, among the other things, to clone disks or wipe data. The dd utility is available out of the box even in the most minimal installation of all distributions. In this tutorial we will see how to use it and how we can modify its behavior by using some of the most commonly used options to make your Linux system administration job easier.

In this tutorial you will learn:

  • How to use dd
  • How to modify the program behavior by using some of the most commonly used options

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Most common custom SSH Configurations of the OpenSSH Server

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The Openssh set of utilities let us create secure, encrypted connections between machines. In this tutorial we will take a look at some of the most useful options we can use to change the behavior of sshd, the Openssh daemon in order to make your Linux system administration job easier.

In this article we assume the existence of an already running and accessible server. If you want to know more about Openssh installation, you can take a look at this article on how to install SSH server on Ubuntu Linux.

In this tutorial you will learn:

  • How to customize the behavior of the sshd daemon by manipulating options in the main ssh config file /etc/ssh/sshd_config
  • How to change the default port(s) used by the server
  • How to change the address the server listens to
  • How to change the maximum SSH login time
  • How to allow or deny login as root
  • How to change the max login attempts and maximum number of session opened
  • How to display a message when user tries to authenticate to the server
  • How to Enable/Disable password and pubkey authentication
  • How to Enable/Disable HostBasedAuthentication
  • Enabling/Disabling X11 Forwarding

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foremost-manual

How to recover deleted files with foremost on Linux

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In this article we will talk about foremost, a very useful open source forensic utility which is able to recover deleted files using the technique called data carving. The utility was originally developed by the United States Air Force Office of Special Investigations, and is able to recover several file types (support for specific file types can be added by the user, via the configuration file). The program can also work on partition images produced by dd or similar tools.

In this tutorial you will learn:

  • How to install foremost
  • How to use foremost to recover deleted files
  • How to add support for a specific file type

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Change default root password on Ubuntu

Default root password on Ubuntu 18.04 Bionic Beaver Linux

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Objective

The objective is to access root shell and optionally change the default root blank password on Ubuntu 18.04 Bionic Beaver Linux.

Operating System and Software Versions

  • Operating System: – Ubuntu 18.04 Bionic Beaver Linux

Requirements

Privileged access to your Ubuntu System as root or via sudo command is required.

Conventions

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