Linux Format - October 2014 UK(4).pdf

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Retro Raspberry Pi
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1
for Free Software
From the Spectrum to the
Amiga, Linux loves emulation
SOLVED!
GRUB gripes Driver issues
Printing errors Networking
Slow systems Logs
PROBLEMS
YOUR LINUX
High standards
The next implementation
will not only be a reference
but also the default for a country.
Italo Vignoli
How OpenDoc is taking over the world
p46
Web servers
VNC and SSH
Python hacking
Also inside…
Linux on Android
Make your favourite OS run
on your Android device
p70
TuxRadar.com
Dynamic Nginx
Enhance your web
server with XHTML
Remote access
Take control of all your
boxes securely and easily
Minecraft import
Create instant image
walls and blow them up
Welcome
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1
for Free Software
What we do
We support the open source community
by providing a resource of information, and
a forum for debate.
We help all readers get more from Linux with our
tutorials section – we’ve something for everyone!
We license all the source code we print in our
tutorials section under the GNU GPLv3.
We give you the most accurate, unbiased and
up-to-date information on all things Linux.
Who we are
This issue is about fixing common problems in
Linux, so this month we asked our team: what’s
the worst problem you’ve encountered in Linux?
Jonni Bidwell
My neglected Ubuntu install is broke. It
moans that the root partition is mounted
read-only, then displays the login greeter
as if everything is fine. But everything is
not fine. I can’t move the mouse cursor
or type anything in. I have to reboot using
Ctrl-Alt-SysRq-B, upsetting the filesystem
journal. Never mind, I gots other distros.
Take a ticket
At some point everyone has a problem with Linux that
they can’t solve alone, but these things never stay a
problem for long, do they? A large part to this is that
Linux – and frankly many areas in computing – can fall back on
a strong community willing to pitch in and help complete
strangers with their OS issues. That network of forums,
newsgroups and blogs has transformed a quick Google search
into a vast catalogue of help and troubleshooting advice.
But this assumes you have a handy internet-capable device
to hand. What happens if you have no spare device, or even no
internet connection to hand? You have no help! To boost your
innate troubleshooting knowledge and draw together a useful
collection of tried and tested fixes, we’ve asked
Linux Format
stalwart Neil (the best of names) Bothwick to curate his top
Linux problems. For nine years and over 100 issues, Neil – the
brains behind the
LXF
Answers
section – has been eliminating
readers’ troubles with the efficiency of a Terminator running
BBC machine code.
So for one issue only, we bring you a mammoth 14-page
special troubleshooting guide to help you solve your Linux
woes. Jump to page 32 now to tuck into this extra-large helping
of Linux answers… and don’t forget to send us your own
problems and solutions for future issues.
One Linux system you should never have a problem with is
a Chromebook. These are really gaining traction thanks to their
low cost, functionality, amazing battery life and the fact that
you can still run Linux on them. If you’re thinking of buying one
of these low-cost wonders, don’t splash out before consulting
our Roundup on page 24. There’s also our usual great mix of
delights the FOSS world has to offer, from more on the next-gen
Nginx web server (page 80) to post-quantum encryption
techniques on page 50. Getting more down-to-earth, we cover
running Linux on Android devices on page 70 and old-school
emulators on page 74. On top of all this, you can discover the
world of
Open Office
macros, more
Minecraft
hacking and how
Facebook is trying to make PHP a little friendlier with Hack. It’s
the usual all-encompassing selection that you’ve come to know
and love from
Linux Format!
Enjoy!
Neil Bothwick
Getting friends or family to try Linux and
then finding I’ve become their on-demand
support system for ever more. It’s like the
Chinese custom about saving a man’s life
and then becoming responsible for it. The
really bad problems all seem to be user-
initiated, though, with the OS only getting
the blame because it cannot answer back.
David Hayward
I fondly recall setting up a proxy server for
a call centre on an old Red Hat built PC.
Problem was, it only worked whenever I
was in the building. Ten minutes after I left,
it fell over. Every time. I never did work out
what on earth was going on with it.
Les Pounder
I’ve got nothing against Samba, but the
two of us have rarely seen eye-to-eye.
Even to this day I’ll use NFS, SFTP and SSH
over Samba. But luckily for me all of my
household run Linux – even Mrs P, who is
running Crunchbang Linux on her laptop.
Mayank Sharma
I had trouble getting to the graphical
desktop on a Slackware install in 1999.
The concept of the graphical desktop as
separate from the OS was inconceivable
to my 13-year-old self. So I kept reinstalling
the distro, wondering why I was getting a
command-line interface instead of a GUI.
Neil Mohr
Editor
neil.mohr@futurenet.com
Subscribe today
See p30 for awesome deals
www.tuxradar.com
October 2014
LXF189
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Contents
Reviews
KDE 5.0
...............................16
Join us in celebrating a KDE update that
doesn’t completely break everything!
“We can’t solve our problems with the same level of thinking that created them”.
Your Linux
problems
solved!
Dodgy drivers or
a good ol’ fashioned
kernel panic?
Head to p32 for
our 14-page guide
KDE 5.0 is out - will it make you want
to change your desktop?
OwnCloud 7 CE
................
17
Get your head stuck in your very own cloud,
nestled among your documents and photos,
with OwnCloud.
UberStudent 4.0
................18
Be the class swot with this helpful
distribution with an educational focus.
Roundup:
Chromebooks
p24
LXQt
....................................19
Razor-qt and LXDE-Qt get it on.
Dell PowerEdge T20
........
20
Dell’s latest desktop server box gets put
through its paces.
Slice of Radio
.....................21
Let your Raspberry Pi communicate
wirelessly with this RF add-on.
Nvidia Shield
....................
22
We get our hands on the most powerful
Android tablet currently available.
Talking
heads
The Nvidia Shield tablet is packed
with the latest mobile technology.
Games
................................
23
This month’s Linux gaming picks are: a flight-
sim for the budding pilot,
X-Plane 10 Global
and
Blockstorm
, a voxel-based shooter.
This is history, and
humanity has shown
that you can change history.
Italo Vignoli
and the open document standard
p46
www.linuxformat.com
4
LXF189
October 2014
On your free DVD
Tails 1.1
Try the security-focused distro
Deepin 2014
Dive into the contender from China
PLUS:
HotPicks and tutorial code
p96
Treat yourself or a
loved one to an
LXF
subscription!
p30
Don’t miss...
Cryptography: a history
....50
We look at the history of keeping secrets safe.
OpenStack Ceph
.................54
The open source storage system explained.
Linux on the curriculum
....56
Linux is no longer too cool for school.
Coding Academy
Minecraft image import ......
88
Jonni Bidwell
shows you how to use Python to
import photos and pictures into Minecraft. Why
would you want to do that? Explosions!
Tutorials
Android
LinuxOnAndroid
..............
70
Make your phone
really
smart by running a
full distribution on it.
Hack .......................................
92
Get to grips with Facebook’s new programming
language which integrates seamlessly with
PHP, and at the same time makes a grown up
language out of it. Learn about the Hiphop
Virtual Machine, type annotations and more.
Run distros on your smartphone.
Regulars at a glance
News.............................
6
Subscriptions ...........30 Back issues ...............68
A new kernel takes over the world,
India loves Linux and OpenSUSE
Factory finds its Willy Wonka.
Lose weight by subscribing to Linux
Format and living on a diet of five
pages a day.
Fill your life (and house) with our
classic back issues. No collection is
complete without
LXF179.
Raspberry Pi
Emulate retro games
........74
Turn the Pi into a pocket sized arcade full of
16-bit goodness. We show you how.
Terminal
Macros and shortcuts
......78
Work faster and smarter from the
command line.
Mailserver..................
10
Sysadmin...................58 Next month ...............98
Readers write in to express their
gratitude to one another and explain
how best to annoy Windows-using
co-workers.
Dr Chris
shows us how to securely
log on to our PCs remotely, and
explains how we can make Linux and
Windows play nicely.
We look at the best distros of 2014,
celebrate 10 years of Ubuntu and
explore Raspberry Pi alternatives.
Nginx
XHTML
..............................80
You’ve built the server, now use it to create a
dynamic website to entice visitors in the
next part of
Andrew Mallett’s
guide.
User groups................13 HotPicks ....................62
Les braves the icey roads up North to
bring us tales of unconferences far
and wide.
Apps so hot you’ll need a pair of
Kevlar gloves to handle them.
Included this month is the latest
version of the
Firefox
web browser,
Twitter client,
Rainbow Stream,
calendar and to-do list manager
Macros
Office suites
......................
84
Stuck in the past typing everything out
character by character? Or maybe you’re a
loser who still uses a mouse? Never fear,
Marco Fioretti
will show you the error of
your ways.
Roundup ....................24
We test out the finest Chromebooks
known to man, just for you.
EtmTk
and much more.
Our subscriptions team is
waiting for your call.
www.tuxradar.com
October 2014
LXF189
5

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