How to (Re-)Compress PDFs with Images for Free

I'll show you how to compress PDFs including their images for free using LibreOffice/OpenOffice.
Read more »

More about → How to (Re-)Compress PDFs with Images for Free

Guess the Size of an Lrzip Archive of all Linux Kernel Sources Since 1.0

I've reported before about the efficiency of Lrzip. Now Con did a useful and fun thing: He created an lrzip archive of all the sources of all 2.6 linux kernels. And guess how much space it took? Update: Guess how big an archive of *all* Linux sources since 1.0 is.
A few hints:
- All sources in a tar are 10.3 GB.
- The 2.6.39.1 kernel is 73 MB as a tar.bz2 archive.
- Now it would be less, because the first kernel was smaller (just 32 MB).
- So taking the average (73+32=105/2=52.5) times 39 would be just 2GB (compressed!).

- 19,617,064,960 bytes linux-1.0-2.6.39.tar
- 11,067,473,920 bytes linux-2.6.0-2.6.39.tar

- ( 2,000,000,000 bytes linux-2.6.0-2.6.39.tar.bz) estimate
-   1,535,618,848 bytes linux-2.6.0-2.6.39.tar.xz 13.8%

With heavy, slow IO it took less than an hour to compress, and lrzip was more than twice as fast as xz.

Now that I gave you all these numbers let's see how much it really is... (make a guess an click the link)
Read more »

More about → Guess the Size of an Lrzip Archive of all Linux Kernel Sources Since 1.0

Learn Flashcards Efficiently - Tips and How to get OpenCards Running in Linux - Slow Opening of Files in Openoffice and LibreOffice

OpenCards is a great, optimized memorizing software that ensures you need as little time as possible to learn your flashcards.
What you get

• As it's based on Openoffice, you can make full featured flash cards including diagrams, mind maps and everything else supported in Impress.
• Focus on learning. As it logs your progress and automatically schedules the next time to question you, you can learn without organizing what to learn when.
• The repetition schedule is based on modern psychological research. The Leitner system is "a widely used method to efficiently use flashcards that was proposed by the German science journalist Sebastian Leitner in the 1970s. It is a simple implementation of the principle of spaced repetition, where cards are reviewed at increasing interval." (Wikipedia)

Read more »

More about → Learn Flashcards Efficiently - Tips and How to get OpenCards Running in Linux - Slow Opening of Files in Openoffice and LibreOffice

Rzip - A new compression star is born

Remember when Bzip first came out and out-compressed Gzip\? Well, then came LZMA with another significant increase in compression ration a bit later. And then one of the authors of Samba, Andrew Tridgell, developed a new compression algorithm called Rzip. It compresses even more efficient, though it needs large amounts (may be 1 GB) of memory to do so. And now Con Kolivas, author of the great Desktop Latency patches including the BFS scheduler and the man who designed the current kernel scheduler (though another implementation of his design was used), took it to himself to further develop the rzip algorithm. And the results are quite promising: The linux kernel is compressed about 3 times as fast as with LZMA2 with just 2 percent difference in final size. I look forward to this going downstream into end-user desktop software.

Update: Con just commented with a link to more detailed and accurate lrzip statistics.

More about → Rzip - A new compression star is born

Is the Linux Desktop getting slower and more bloated?

In his "failure of logic" post "K. Mandla" writes that the Linux Desktop is not getting faster even though all the hardware around it is getting faster, pointing to an article with the same argument 10 years ago. The ensueing discussion was much too abstract for my taste. ("Why are clouds?" "What clouds, where?") But if you split up the question you get answers:

Read more »

More about → Is the Linux Desktop getting slower and more bloated?

Adobe Creative Suite 5.5 Released, New SDK Integrate Playbook with CS5

Adobe has announced Creative Suite 5.5 as a product of its mid-cycle this year. Creative Suite 5.5 has a myriad of improvement based on demand and feedback from users before the release of the next version (6.0). Here are some great coverage of these improvements: Mobile DevelopmentAdobe Photoshop now released the SDK that lets developers create applications that can access the tablet photoshop

More about → Adobe Creative Suite 5.5 Released, New SDK Integrate Playbook with CS5

Adobe Releases Wallaby, Converter Flash to HTML5

Apparently Steve Jobs criticism of the Adobe Flash content has been made to re-think. This can be seen from the release of a Flash application to HTML converter called Wallaby. This application will export the materials in a Flash project and were reorganized using HTML and CSS code with the addition of custom JavaScript libraries to handle animated and jQuery code.
The main purpose of the

More about → Adobe Releases Wallaby, Converter Flash to HTML5

Microsoft Annihilate Autorun

After a long so 'entrance' for a variety of malicious programs, Microsoft has finally decided to destroy Autorun. This is done via an update for older versions of the Windows operating system.

As quoted from The Register, Thursday (2/10/2011), if the update is applied, the ability to autorun on Windows will be turned off by default.

Autoron is a feature that allows external devices that

More about → Microsoft Annihilate Autorun

Watching YouTube The Steady With Flash Player 2.10

One of the things complained when watching videos on YouTube is the computers that are too excessive burden. But it was not a problem anymore, the latest version of Adobe's what makes Flash much lighter than the previous.

Flash Player, a video format that was introduced since 1997 and began to evolve into a video stream in 2002. And according to Adobe, up to now about 75 percent of online video

More about → Watching YouTube The Steady With Flash Player 2.10

Learning Math is more easily with Microsoft's Mathematics

If you are a student, a student or students or people who want to learn math with ease, there is now one of the free programs that can support and help, Microsoft Mathematics. This software is developed by providing a variety of mathematical tools to help students / learners to do their jobs quickly and easily.

With Microsoft's Mathematics, we can learn to solve equations step by step, as well

More about → Learning Math is more easily with Microsoft's Mathematics

Damage Repairs Computer Systems Due to Computer Viruses

Computers are already in the clear from a virus or malware (worms, trojans, etc.), does not mean the computer is back to normal. Usually the impact after a computer virus enough so that some windows settings can not be accessed, such as Task Manager, Windows Registry, Folder Options and so forth. To fix the settings that we can use free software Re-Enable. With just one click, then a variety of

More about → Damage Repairs Computer Systems Due to Computer Viruses

Free Software - Fix Problems Internet Connection / Network

When there is a problem with internet or network connection, sometimes we are often confused. Understandably, because such problems are sometimes not easily solved, though in many ways is trying to do. If we experience it, there is a free software that we can try, namely the Internet Complete Repair.

Free software and also portable serves reset, restore (restore factory settings), clean (clear)

More about → Free Software - Fix Problems Internet Connection / Network

New Free Antimalware, IObit Malware Fighter

IObit may already be familiar to most of us, Advanced System Care is one of the most popular software product. Now they also released an anti-malware security products new, IObit Malware Fighter, which has a feature to scan the various Malware such as spyware, adware, trojans, keyloggers, bots, and worms and other threats from the internet.

Display Results Scan IObit Malware Fighter


Although

More about → New Free Antimalware, IObit Malware Fighter

Germany created the software 'Removal Shame'

You may not realize some photos uploaded to Facebook is very embarrassing, or even can destroy your career one day. Do not worry, there is now software that can 'erase disgrace' is.

A German technology company, X-Pire create software that allows the photos uploaded on social networks like Facebook, MySpace and Flickr are automatically deleted after a certain time.

 


In the era of social

More about → Germany created the software 'Removal Shame'

Opera for Tablet Can the Android and Windows 7