Linux Magazine #226 - Print Issue

Highlights:
* Nftables – this new tool for managing Linux firewalls is gradually replacing iptables.
* Timeshift – a user-friendly app for creating and managing system snapshots.
* MakerSpace – Learn to build a homegrown IoT humidity monitor
* LinuxVoice – This month includes tutorials on WordPress and 3D.

News
* Debian Buster Arrives
* IBM Acquires Red Hat
* Raspberry Pi 4 Is Here
* Ubuntu Takes a U-Turn with 32-Bit Support
* OpenSSH Fixes Side Channel Attacks
* Firefox Fixes Error that Crashed HTTPS Pages
* Altair Releases HyperWorks 2019

Kernel News
* Adding git Documentation
* Untangling the System Call Situation
* Bit or Bitmap?

Choose a Small Distro
Beyond the realm of mainstream, enterprise-ready desktop giants lie a handful of miniscule Linux distributions that barely leave a noticeable footprint on a computer's resources. We round up some of the leading small distros, including Porteus, Puppy, Slax, SliTaz, and Tiny Core.

Nftables
The nftables firewall utility offers a simpler and more consistent approach for managing firewalls in Linux.

Programming Snapshot – Go Testing
Developers cannot avoid unit testing if they want their Go code to run reliably. Mike Schilli shows how to test, even without an Internet or database connection, by mocking and injecting dependencies.

Timeshift
Create, manage, and restore system snapshots.

Command Line – QPDF
Use QPDF to easily make structural changes to your PDFs, including reorganizing pages, creating watermarks, setting encryption options, and changing permissions.

LO Writer – PDF Security
LibreOffice Writer offers varying degrees of security for PDFs.

wikit
Save time and mouse clicks by using wikit to search and read Wikipedia entries at the command line.

Charly's Column – Log2Ram and frontail
If you run 25 Raspberry Pis at home, you might think like Charly does when it comes to log management. The result is atomic technology and a logfile disk that is not permanently overloaded.

arp-scan
When it comes to network recon, arpscan allows you to collect device intel quickly and stealthily.

Robotics with PiXtend
Learn some basics robotics with a Raspberry Pi and a PiXtend controller.

Open Hardware – Programmable USB Hub
The Programmable USB Hub resolves common issues with USB reliability.

WiFi Thermo-Hygrometer
A WiFi sensor monitors indoor humidity and temperature and a Node-RED dashboard reports the results.

This month in LinuxVoice.

Doghouse – FreedomBox
FreedomBox offers the convenience of the cloud without loss of privacy.

Scribus
Scribus is a desktop publishing tool that expands your options when designing simple flyers and brochures.

Puppy Linux
Like its predecessors, this ultralight OS is fast and versatile with an easyto- use interface.

FOSSPicks
This month Graham dives into LMMS, Name Generator, Heaptrack, Binaural Audio Editor, Meshroom, Palapeli, and much more!

Tutorials – WordPress 5
WordPress is one of the most popular content management systems. With the introduction of the new Gutenberg editor, now is the time to (re)learn WordPress.

Tutorials – 3D Print Tools
One last step remains in our 3D-printing voyage: actually printing something.