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Programming

Should the Government promote open-source software?

31 October 2008 By Avinash Meetoo 17 Comments

A few days ago, a student from the Faculty of Management of the University of Mauritius sent me an email with a list of questions on open-source software. She was going to participate in a debate competition but didn’t know a lot about OSS. She was going to support the motion that the Government of Mauritius should promote OSS. Naturally, I was keen to help.

I quickly replied to her (mostly mechanically) but today I realised that the questions and answers (even though imperfect and incomplete) would make a nice blog post. Here they are:

> The fact that the source code are available, is OSS insecure?

No. In fact, it’s the opposite.

Linus’ Law states that “Given a large enough beta-tester and co-developer base, almost every problem will be characterized quickly and the fix will be obvious to someone.”

This means that as the source code is publicly available, lots of people look at it and discover bugs (there are bugs in all software including open source software.) Better, as the bugs have been found, they are remedied rather quickly and, most of the time, by the same people who have found the bugs.

Compare this to proprietary software where only a few pairs of eyes can look at the source code and miss most of the bugs.

> Is OSS unreliable for companies as the programming is not done by professional bodies?

What do you mean by “professional bodies”? If you mean professionals, then you should understand that those reading the source code of open source software for fun ARE professionals (or else they won’t understand a thing.)

The only difference is that they don’t work for the company who had released the software.

Now, why would someone read the source code of a software if he/she is not being paid to do so? The only reasons I can think of are (i) for the fun of it and (ii) to make it better.

The argument can even be that those who are paid to write software generally do a worse job than those who do it for pleasure as money has never (and will never be) a strong enough motivation to do good.

> Will it be good for our Government to promote OSS in its activities?

Of course. Because of cost reduction, increase flexibility and increased reliability.

> Is the maintainance cost of OSS really costly than CSS?

What is maintenance cost? Do you mean support?

I would say that supporting OSS requires people who are more knowledgeable (and, consequently, more expensive) because, simply said, OSS has more features and offers more flexibility.

Maintaining an airplane is more costly than maintaining a car but you need to do both as sometimes you really need the airplane :-)

 

> Is it as user friendly as CSS?

What do you mean?

CSS is not generally user-friendly. In fact, most software is not user-friendly as their user interaction (and not only user-interface) has been designed by programmers instead of interaction designers (read Alan Cooper’s, the father of Visual Basic, book for instance. It’s called The Inmates Are Running the Asylum)

So user-friendliness is a result of the user interaction having been designed by someone knowledgeable in that field. And you’ll find user-friendly software both in the CSS and OSS scene. And lots and lots of user-unfriendly software too.

> Will young students have difficulties in learning OSS?

No. Provided they have a brain and are open to new things. Those two should be essential pre-requisites for entering a university.

> On what ground the general public will be convinced to use OSS as they already familiar with CSS?

The general public already uses Firefox which is OSS. The reason why is that Firefox and OSS in general empowers people to do more complex things.

So I believe that this is the way to convince people to make the effort to learn a new tool (which a software basically is.) You have to tell them that they’ll become more powerful ;-)

> Dear sir if you also have some other point of view that you would like to share with us conserning both the advantages and disadvantages of OSS in Mauritius, it will be of great help to us.

Advantages: Cost-effective, Flexibility, Reliability, Great online community
Disadvantages: Higher-learning curve.

A few days later after having, hopefully, digested the answers, she asked me some additional questions. Here they are:

> Sir can you plz explain how will OSS increase reliability and Flexibility.

(1) Reliability: this is a direct consequence of the source code having been “audited” by thousands of people. Bugs are caught very quickly. And, more important, they are corrected very quickly too. Thereby an increase in reliability.

(2) Flexibility: this is a consequence of most OSS being done by people who think the UNIX-way. In the UNIX world, instead of building one tool which does everything (badly), people tend to build a multitude of small tools which individually are simple but which can be combined in a pipeline in multiple ways. Have a look at UNIX pipes for instance. Consequently, UNIX-derived operating systems like Linux are extremely flexible and, hence, powerful but only to those knowledgeable enough…

> I have heard from a friend that in the year 1997 OSS was to be implemented but then Microsoft came with a better package towards the government? Can you confirm this Sir?

I don’t know for sure.

> And what are your opinion on the following: There is no guarantee that development will happen.

This is true for all software. Every year, a number of software are abandoned. In the commercial world, users are essentially doomed (as nothing can be done except migrating to another software.) In the OSS world, someone else (the end user himself maybe!) can continue development as the source code is available.

> It is sometimes difficult to know that a project exist, and its current status

You just have to ask the programmers themselves! In the OSS world, they are readily accessible. And there are lots of websites that monitor this kind of thing (e.g. Sourceforge and Freshmeat)

> Liability for intellectual property infringement

In the OSS world, one can technically-speaking audit the whole source code because it is available for free. I don’t know how one can audit commercial software with closed source. So, in the commercial world, it’s actually impossible to say that one software does not infringe any intellectual property except if you believe the vendor (but that’s not auditing…) Read about the SCO debacle for more information.

That’s it. Nothing much.

A small update: I wrote an article on the Linux User Group of Mauritius website a few years ago. It was called 10 reasons why Linux is better than Windows for the Mauritian School IT Project. It is still relevant today.

Filed Under: Education, Linux, Mauritius, Programming, Technology

Incremental backup of iPhoto ’08 library using SuperDuper!

7 August 2008 By Avinash Meetoo 13 Comments

iPhoto is an excellent Mac OS X application created by Apple which is used by countless amateurs (like yours truly) to manage their digital photo collection. Since the release of iPhoto ’08, a lot of people have wondered how to do an incremental backup of their library as this latest version of iPhoto keeps the library in a package (a special type of folder) instead of a plain folder and some backup applications have trouble with that. (An update: I tried doing the same thing with the latest HFS+-aware version of rsync 3.0 but I couldn’t do it as it seems to me that rsync does not copy all the metadata created by Mac OS X. Maybe I missed an option…)

 

I’ve managed to do incremental backups (i.e. quick and painless) using my registered version of SuperDuper! It’s important to use a registered version of SuperDuper! in order to do smart updates which is what SuperDuper! calls incremental backups. The non-registered version of SuperDuper! cannot do incremental backups which means that the whole iPhoto library will be copied over when doing a backup (which means 15Gb in my case…)

This great backup software is normally used to backup a whole partition (i.e. my MacBook’s hard disk) to another partition (i.e. a partition on an external drive which can then be used to boot the MacBook.) I’ve just realized that it’s relatively straightforward to restrict the files to be backed up to a selection (i.e. your iPhoto library only…) and, instead of the destination being a partition, to choose a sparse image (i.e. a special file containing other files and which takes up only as much actual disk space as the data contained within.)

Step 1

First of all, select the partition where the iPhoto ’08 library resides in ‘Copy’ (mine is Multimedia.) Then select where the sparse image will reside (I chose a folder on another disk.) Then you’ll have to create what SuperDuper! calls a copy script which will be used to indicate what to copy and what to ignore. To do that click on the drop down next to ‘using’ and choose ‘New Copy Script.’

Step 2

Write a nice description and make sure that the ‘Allow the user to select this script’ is ticked.

Step 3

In the ‘Included Scripts’ tab, click on the ‘+’ and choose the predefined ‘Exclude all files’ script. This is to make sure that SuperDuper! only backups those files and folders that you’ll explicitly specify and ignore all the rest. This is essential.

Step 4

Then, in the ‘Script Commands’ tab, navigate to the folder where the iPhoto library is found and select it. Click on ‘Add Item’ and it will be added in the top part of the window. The default command is ‘ignore.’ Change that to ‘copy.’ As you can easily guess, this, combined with the ‘Exclude all files’ seen previously, will tell SuperDuper! to only consider the iPhoto library and nothing else which is what we want.

Click on ‘Close.’ and give a sensible name to the script (‘Backup iPhoto library’ is nice…)

Then you can click on ‘Copy Now’ and, voilà, an incremental backup is done! Remember to use a registered version of SuperDuper!

Filed Under: Apple, Programming, Technology

What text editor do you use?

16 July 2008 By Avinash Meetoo 22 Comments

Once more, I’ve been thinking about that one thing that regularly prevents geeks like us from sleeping peacefully: What is the text editor that I prefer?

I’ve always been a vim guy. I think I started using it on my Amiga or something about 15 years ago. I used it daily when I was studying in France and ever since. Of course, I’ve read a lot about how Emacs can help one reach nirvana and I’ve tried it a number of times but I’ve never managed to like it. I’ve even aliased vi to emacs for some time but this didn’t help a lot…

As a Mac user, I’ve bought TextMate which lots of people consider as being one of the best text editors around. In fact, it is regularly described as a 21st century Emacs. It looks great and has lots of very cool features. It supports loads of different programming languages and is extensible through plugins.

Even though I use it from time to time (especially when editing Ruby programs), I tend to quickly open a terminal and launch vim far more regularly. I wonder if I should alias vim to TextMate to help me recover my financial investment :-)

When programming in Java, I always use Eclipse. I know, it’s massive and complex but I love the syntax completion and refactoring facilities. I tried NetBeans but I am more of an Eclipse guy.

What about you?

Filed Under: Apple, Linux, Programming

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