2014年Linux Format特别版：开源资源、安全教程与最新技术概览

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"Linux Format 2014/01"是一本专门关注Linux开发领域的杂志，提供了丰富的资源和最新资讯。本期内容涵盖了多个主题，旨在帮助读者深入了解和提升Linux技术。首先，如果你丢失了免费软件DVD，杂志建议读者联系新闻代理商获取。这可能意味着本期杂志提供了一些重要的免费Linux发行版或工具的下载链接。在"Networking"部分，Zabbix被推荐用来监控网络系统，确保系统的稳定性和性能。远程访问是本期的另一个焦点，介绍了Dancer's Shell，一种增强型的SSH工具，特别适合于对远程系统进行高效管理。 "Develop You Git!" 部分着重介绍了Linus Torvalds的版本控制系统Git，让读者能够掌握这个强大的工具，便于团队协作和代码管理。 "Hack your Nexus" 部分探讨了如何在CyanogenMod设备上获得root访问权限，这对于追求个性化和自定义的用户来说是个吸引人的话题。 "Rescue me!" 涵盖了系统安全方面的重要内容，The Good Doctor给出了修复root密码和保护系统免受攻击的方法，确保了系统安全。此外，OggCamp的内容展示了全球各地的科技爱好者聚集一堂，共同讨论Linux技术与开源社区的动态，利物浦站的活动特别值得关注。 "Alan Turing"的故事提醒人们反思这位计算机科学先驱的命运，他的生平与现代科技发展紧密相连。 "Roundup: Top-five video editors" 提供了当时市面上五款顶级的视频编辑软件，满足不同用户的需求。在免费DVD附赠内容中，包括Ubuntu 13.10、OpenBSD 5.4等主流桌面操作系统以及最新的技术更新，同时还有10页的专业编程技巧展示。 "Inside TOR" 展示了开源技术如何帮助用户在网上隐藏行踪，对于隐私保护和匿名浏览有着实用价值。 "Linux gaming" 部分预示着Linux游戏体验的变革，深入剖析了SteamOS和游戏行业的趋势，为游戏开发者和玩家提供了新的可能性。 John Graham-Cumming的文章则讨论了Turing与伦理学的关系，对科技发展背后的社会责任进行了深入思考。 Python的文件系统路径讲解，为Python开发者提供了实用的路径操作技巧；Firefox OS的应用开发教程则鼓励开发者创建适用于这种新兴移动平台的应用。 "Lua for Smarter Scripting" 是针对Lua脚本语言的深度解析，帮助开发者编写更高效、智能的脚本。最后，"From Download to Drive" 以清晰的步骤指导读者如何充分利用Mint、Ubuntu和Mageia等发行版，并提供了定制和优化桌面环境的建议，帮助新手快速入门Linux世界。 Linux Format 2014/01期杂志内容丰富，不仅有实用的技术教程，还涵盖了社区活动、伦理讨论和新兴技术趋势，是Linux爱好者的必读之作。

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www.tuxradar.com

January 2014 LXF179

hen you suggest to people

to switch to Linux, what’s

their reaction? In my

experience there have been a

number of stock responses to the

mention of the ‘L’ word. The first is

fear of the unknown. For light and

casual users they often try to

overlook the fact that Windows

slows down their ageing laptops, and

put up with a bloated OS and fork

out for virus protection that further

slows down their systems. But why?

It’s because Windows is already

installed, and it’s all they have ever

known. For the most part it does the

job of letting them browse the

internet, create documents and

send and receive emails. The

frustrating thing is: Linux can let

them do this as well, and a lot faster.

Ironically Microsoft is losing the

familiarity card with Windows 8 – a

great time perhaps to remind people

of the Ubuntu distro’s ease of use,

and Mint’s familiar desktop layout.

Do not fear change

Another reaction I get is from people

who know a bit more about Linux,

but have got it into their heads that

it’s all a massive faff of impenetrable

terminal commands, driver issues

and unreliable software. It’s an out of

date – if not completely wrong –

view of the state of Linux. There are

distros where everything you need

to do can be achieved through a

friendly graphical interface. You’d

never need to use the terminal, but

then the beauty is that it’s still there

if you want to dig a little deeper. As

for drivers, there’s no guarantee that

Windows would behave any better.

matthew.hanson@futurenet.com

MATT HANSON

has been networking

everything in his

house with a spare

Ethernet port.

Our pick of this month’s releases:

The new release of OpenBSD aims to make it

more user friendly, but at what cost?

Video editors p26

All the latest software and hardware reviewed and rated by our experts

Beginnings

OpenBSD 5.4

Football Manager 2014

Avidemux

OpenShot

Kdenlive

PitiVi

LiVES

Don’t spend thousands of

pounds on expensive Macs and

software. We’ve rounded up the

best free video editing software,

letting you blow your budget on

catering for your stars.

Football Manager 2014

adds to the rapidly

growing roster of Linux games.

Dingoo A330LE: A little

gadget to relive our 8-bit

and 16-bit youths.

Devolo vs Netgear

Powerline kits ........18

Powerline networking kits

transform the powerlines that run

through your home into Ethernet

cable replacements, letting you

easily connect up devices

throughout your house without

having to worry about tripping over

cables or drilling holes in your walls.

We look at two of the latest

Powerline kits from the biggest

names in home networking and see

how they compare.

Dingoo A330LE ...... 20

Is that a Mega Drive in your pocket

or are you just pleased to see us?

We take a look at this portable

classic console and arcade

emulator with an open Linux-based

operating system that gives it a

level of flexibility you won’t find

from Nintendo.

Football Manager .... 21

The 2014 edition of the incredibly

popular football managment sim

and spreadsheet ‘em up comes to

Linux. Is it still just as addictive?

OpenBSD 5.4 ......... 23

OpenBSD has been around for a

fair few years now, mostly

remaining the preserve of servers.

Does this latest release make it a

more tempting choice for desktop

and home users? We take it for a

spin to see what’s new, and what it

means for the future of OpenBSD.

18 LXF179 January 2014

www.linuxformat.com

Reviews Networking

In brief...

Two kits for

quickly installing

powerline

networks and

expanding Wi-Fi

signals

throughout your

house.

y dad has a problem; he lives

in rural France. Not that

there’s much wrong with that,

as the beautiful scenery and decent

wine that’s cheaper to buy by the bottle

than mineral water attests. The real

problem is the thick stone walls that

prop up his house – they do just as

good a job of stopping Wi-Fi signals as

they do keeping out the cold. It’s a

similar story for many of us living in

Northern Europe, or anywhere where

the history is as long as the winters are

chill. Whilst the Wi-Fi repeaters favoured

by our American cousins are fine for

thinner walls and houses over fewer

stories, elsewhere it’s the powerline

(also known as ‘homeplug’) solutions

that are proving to be the best way to

increase the coverage of our networks.

Wi-Fi capable

The two powerline kits we look at here,

the Devolo dLAN 500 WiFi Network Kit

and the Netgear Powerline 500 WiFi

Access Point, have a lot in common,

most notably the built-in Wi-Fi antennae

that take the networks that travel

through a building’s powerlines, and

broadcast them as a Wi-Fi network. All

you need to do is plug one of the

adapters into a wall socket near your

modem or router, and connect to it via

an Ethernet network cable — two are

included in the box with the Netgear

Powerline 500 WiFi Access Point kit,

which is a nice bonus for anyone who

has brought home a new bit of kit, only

to find they need to go back out to buy

make sure you have a good spread of

Wi-Fi throughout the house. You can

also buy a cheaper kit that includes just

two devices, and you can buy additional

dLAN 500 WiFi units to increase the

range. The Netgear kit, on the other

hand, comes with just two adapters,

though you can also buy additional

ones to boost your coverage.

The body of the dLAN 500 duo

adapter is small and discreet, which

means it can be easily hidden away.

However, because of its size, and the

fact that it’s an entry-level product,

there’s no plug socket passthrough,

unlike the more expensive Devolo dLAN

500 AVplus. A passthrough means you

don’t lose a power socket when you use

a powerline adapter, and it can also be

used to filter the power supply,

strengthening the network connection

and minimising interference. The other

adapters included in the kit are dLAN

500 WiFi units. Again, they are small

and compact, but come with just one

Ethernet port for non-Wi-Fi devices.

A quick touch of a button can turn the

Wi-Fi signal on or off, and another

button lets you quickly pair up the

adapter with the others. They are only

single band, but can broadcast up to

801.11n, which offers fast and strong

wireless signals. Each unit can

Wi-Fi hitting a brick wall? Matt Hanson compares the Devolo dLAN 500

WiFi and Netgear Powerline 500 homeplug kits.

Devolo vs Netgear

This handy app for the Devolo kit can be installed in Ubuntu and lets you view

the health of your network, as well as troubleshoot any problems.

The kit with three adapters gives you plenty of scope for

expanding your network over a medium to large house.

all the missing cables. The Devolo kit

comes with only one Ethernet cable,

which is a shame.

Both devices also have HomePlug

AV2 500 technology built inside them,

which is the latest powerline networking

tech, with theoretical speeds of up to

500Mbps. It’s designed for traffic-heavy

networks, where there’s a lot of

downloading, streaming and moving

files all happening between mulitple

devices at the same time.

What’s in the box?

The Devolo dLAN 500 WiFi Network Kit

comes with three adapters, which is

about the right number if you want to

Turn off the

Netgear adapter

to save power.

www.tuxradar.com

January 2014 LXF179

Networking Reviews

Features 7/10

Performance 7/10

Ease of use 8/10

Value for money 7/10

Features 8/10

Performance 6/10

Ease of use 9/10

Value for money 7/10

Netgear Powerline 500 WiFi Devolo dLAN 500 WiFi

The kit has decent speeds, but lacks

some of the more advanced features

you’d find on other powerline kits.

For an entry-level home networking

kit, it’s a great choice if you struggle

to get Wi-Fi throughout your home.

Rating 7/10Rating 8/10

VerdictVerdict

Developer: Netgear

Web: www.netgear.co.uk

Price: £89.99

Developer: Devolo

Web: www.devolo.co.uk

Price: £124

“The body of the dLAN

500 duo adapter is small

and discreet”

Access Point was also incredibly easy to

set up – we just plugged the adapters

into two sockets and they found each

other straightaway. The kit comes with

a disc containing a setup utility, though

it’s optional to use, which is just as well

as it won’t run on Linux. Although the

installation is so straightforward there’s

little need for the setup utility, during

the setup procedure on a Windows PC

or Mac, the software prompts you to

add encryption and a password to the

wireless network the adapters

broadcast. Without running the setup

application and just plugging in the

adapters, they’ll begin broadcasting an

unprotected wireless network by default

– which could be a serious security

concern. Thankfully, a password can be

easily added via the web interface,

using a browser to navigate to the

adapter’s IP address, but it is still an

annoying oversight.

Transfer speeds

To test out both powerline network kits,

we hooked up two PCs at either end of

a house and measured how fast they

transferred a 2GB file between them.

broadcast their own network SSID,

effectively creating a number of

separate wireless networks around your

home, or they can be used to project

the same network throughout your

house. This option, that uses Wi-Fi Move

technology, is particularly useful if you

don’t want to have to type in passwords

for a number of different wireless

networks in your home.

Pocket-sized Power

The Netgear Powerline 500 Wi-Fi

Access Point is also small and compact,

with just a single Ethernet port and no

passthrough. It doesn’t have the Wi-Fi

Move tech of the Devolo, so each Wi-Fi

equipped adapter will create a brand

new wireless network. If you have a lot

of adapters, you’ll soon see a rather

crowded collection of wireless SSIDs.

We much prefer Devolo’s approach,

which keeps things manageable. The

adapter with the wireless access point

has an LED light that changes colour

depending on the strength of the signal

it is getting through the socket. This is

a nice touch that can help you choose

the optimal place to plug it in. Another

button on the adapter lets you quickly

set up powerline security, which is

handy for people in shared houses or

flats that use the same power lines.

Setting up the Devolo dLAN 500 WiFi

Network Kit was remarkably easy, and

the three units found and

communicated with each other

straightaway. Further tweaks to the new

network are done quickly and easily

with Devolo’s easy to use dLAN Cockpit

software, which as well as being

compatible with Ubuntu and other

Debian-based distros comes as an app

for iPhones and Android devices.

The Netgear Powerline 500 WiFi

Transfer speeds for the Devolo were

66.08Mbps on average between the

two machines, not bad – and plenty of

scope for streaming media – but we’ve

seen much faster speeds with other

competing powerline adapters, such as

the Linksys Powerline HomePlug AV2

Kit PLEK500, which managed speeds

of 107.28Mbps – almost twice as fast,

though it doesn’t come with Wi-Fi built-

in. The Netgear Powerline 500 WiFi

Access Point’s speeds were also not too

bad, with 67.43Mbps recorded, a bit

faster than the Devolo’s speeds but

again well below the Linksys. It’s enough

for the internet and streaming standard

definition movies, but for large files of

HD media, you’ll want something faster.

With speeds this close we need to

look at which powerline network kit

offers the most features, and with the

Wi-Fi move and Linux-compatible dLAN

Cockpit software, we’re going to name

the Devolo dLAN 500 WiFi Network Kit

as the best Wi-Fi-capable powerline

network adapter kit. That said, the

Netgear Powerline 500 WiFi Access

Point is a decent choice too, with higher

speeds but a few security flaws.

LXF

The Netgear Powerline 500 WiFi

Access Point comes with two compact

adapters that are easy to hide away.

20 LXF179 January 2014

www.linuxformat.com

Reviews handheld console

In brief...

A portable

handheld retro

gaming emulator

and media player,

with heaps of

potential. See

also: Open

Pandora or the

GP2X Caanoo

Game System.

Out of

the box, the

Dingoo A330 is

capable of

emulating a whole host

of classic consoles and

handhelds: NES, SNES, Sega

Mega Drive, GBA, Neo Geo and the

CPS1 and 2 arcade system boards.

It can also play back a variety of

video files, via the PlayStation-esque

XMB, as well as audio, photo and text.

However, the real benefit of the A330 is

the fact that all the homebrew

community-developed extras and

applications can be added relatively

easily to the default Dingoo OS.

Homebrew extras

A quick search for the many

community pages and you will find a

wealth of other emulators, extra media

players and even a Linux distro that you

can installed and run through the main

OS layer. Operating the Dingoo is

extremely easy – simply execute the

emulator in question and point it to a

valid game file, or browse through the

game files individually and the relevant

emulator will launch upon execution.

It’s worth bearing in mind, however,

that some emulators will only work with

very specific game files, but it’s not too

difficult to convert any existing backup

game files into a format that the stock

A330 emulator will be able to work with

without protest.

The gaming quality produced from

the pre-installed emulators are as near

to perfect as you would expect.

The Sega Mega Drive emulator we

tested was excellent, and performed

without any loss in graphics, sound or

gameplay. Admittedly, the sound was a

little squeaky due to the small speakers,

and the buttons were mapped

differently depending on the game;

mulating the computers and

consoles of the past must be a

big thing at the moment in

China, as the slew of imported

emulation devices that are appearing

on various gadgets sites attest.

The Dingoo A330, from Dingoo Digital

Technologies, is one of these devices,

and goes some distance towards

bringing you an all-round, lovable retro

gaming feel.

The A330 is a fairly impressive unit;

its look greatly resembles a PSP, but is

roughly the size of a Nintendo DS. It has

a D-Pad that doesn’t feel too ‘squishy’

or loose, and a four-button XYBA

arrangement with two additional

shoulder buttons, along with the usual

Start and Select. The buttons feel well

designed with very little travel, and play

remarkably well, considering the

inexpensive nature of the device. The

screen is a 2.8-inch, 16M colour LCD

with a maximum resolution of 320 x

240, with a set of stereo speakers on

the underside of the unit. This, generally

speaking, is more than enough for

emulation purposes.

There is also a miniUSB port

available for charging and file transfers,

along with a TV-OUT jack, headphone

socket and a Mini-SD expansion slot,

which can house up to 16GB cards.

Disappointingly, though, there isn’t a

hardware volume control, the volume is

handled, rather awkwardly, by using a

combination of the left shoulder button

and down on the D-Pad.

The CPU is an Ingenics JZ4740

MIPS running at 336MHz with 64MB

RAM and a 4GB internal NAND storage

device, which offers enough power to

emulate most classic machines.

Powering this little lot is the 3.7V

battery, which can last up to roughly

seven hours under normal conditions.

If classic gaming on the go is your idea of heaven, then you’ll be in retro

Valhalla with the Dingoo A330, as David “Hadouken” Hayward explains.

Dingoo A330LE

Features 810

Performance 8/10

Ease of use 9/10

Value for money 8/10

Dingoo A330LE

Summary: An easy-to-use handheld

gaming device that’s great fun,

although a tad on the expensive side.

Rating 8/10

Verdict

Developer: Dingoo Digital

Web: http://dingoo-digital.com

Price: £84.99

The Dingoo A330LE,

a versatile handheld for

the classic gamer.

The speaker

output can be

a little on the

tinny side, but

headphones

can fix this.

however, it’s easy to work out which

button does what, and the sound

problems can be fixed with a half

decent set of headphones.

Overall, the Dingoo A330LE is a fairly

robust unit. It feels sturdy and is light

enough to slip into the pocket without it

becoming annoying. The emulation is

fantastic, and is worth it for the Mega

Drive handheld gaming alone, but some

of the homebrew emulators may

require a fair bit of work to get them

going. The Dingoo A330LE rated well

above some of its competitors, and has

a wealth of features that offer great

potential for future modding and classic

retro gaming.

LXF

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2014年Linux Format特别版：开源资源、安全教程与最新技术概览

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