Linux Magazine #222 - Print Issue

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Quick Overview

Issue #222: Snapshots – A better way to protect your data?

Modern filesystems make it easy to take a snapshot – a precise copy of your data at a moment in time. This month we review some leading Linux snapshot tools.

Other highlights include:
* Redundant Internet Links – With a little help from OpenWrt, you can support two Internet uplinks from your little home router.
* tmate – Access a remote shell session.
* MakerSpace – Build your own WiFi-controlled airboat.
* Linux Voice Tutorial – Bash test conditions and a study of two useful outline tools: CherryTree and Piggydb.

On the DVD: CentOS 7.6 (1810) and Kubuntu 18.10 "Cosmic Cuttlefish"

Linux Magazine #222 - Print Issue

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News
* VMware Rolls Out Essential PKS
* Linux 5.0 Is Here
* Kali Linux 2019.1 Available
* Linux Foundation Releases a New Draft†of OpenChain Specification
* Hackers Start Exploiting Drupal Bug
* LibreOffice Vulnerable to Remote Code†Execution Flaw
* Early Warning for Seismic Events?

Kernel News
* printk() Wrangling
* Persistent Memory as Generalized Resource
* Making Kernel Headers Available on†Running Systems
* Kernel Licensing Hell

Snapshot Tools
Experts agree about the need to keep a copy of your data, but restoring from a set of incremental backups takes time and sometimes doesn't work as expected. The other option is to capture your data in a snapshot. We review some leading Linux snapshot tools.

KDE Plasma 5.14
Plasma 5.14 brings some highly visible improvements for KDE users, including a much-improved Discover software manager and a new widget for multi-display environments. We tour the latest version of KDE's iconic desktop.

Redundant Internet Links with OpenWrt
Redundant Internet uplinks are standard on big corporate networks, but they are still the exception for the home and small-office sector. If you're ready to experiment, you can set up redundant Internet connections on your own home router with OpenWrt and the powerful Mwan3 extension.

Command-Line – New Commands
As the standard core Linux commands have become more complex due to revisions, new commands have risen to take their place. Bruce looks at seven of these modern shell commands, plus a terminal emulator.

Charly – Adminer
Sys admin columnist Charly freely admits that he doesn't like SQL and phpMyAdmin any more than he does COBOL. Meet his new best friend; the slim, attractive database tool known as†Adminer.

Programming Snapshot – Gimp
Performing the same Gimp image processing steps again and again is tiresome and error prone. Mike Schilli assigns this task to a Python script via a†new menu entry.

MicroPython and ESP8266
An airboat project uses a standalone WiFi web server for remote control.

Open Hardware – Arduino vs. Pi
When it comes to open hardware projects, the choice of an Arduino or a Raspberry Pi board can determine success or failure. Read on for guidance in selecting the best board for your needs.

This month in Linux Voice.

Doghouse – Open Hardware
Maddog predicts the era of closed, proprietary chips as the only option is drawing to an end.

CherryTree and Piggydb
Organize your thoughts with the CherryTree desktop app and an innovative web application called Piggydb.

Filesystem Tools
Tools like mount and findmnt reveal which partitions and filesystems are mounted on your†computer.

FOSSPicks
This month Graham looks at Neuronify, Undervolt GUI, Entropy Piano Tuner, Gnome Internet Radio Locator, Hatari, and more!

Tutorials – Shell Test Conditions
Our shell scripting series continues with a look at test conditions and exit codes.

Tutorials – OpenSCAD
Ah! What a joy is your first 3D printer... but once you have printed your first benchy, where do you go from there? To building your own pieces, of course!

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