Title, Appunti di informatica libera. Author, Daniele Giacomini. Publisher, Systems Comunicazioni, ISBN, , Length, Appunti di informatica libera by Daniele Giacomini at – ISBN – ISBN – Systems Comunicazioni – Softcover. which makes available automatically a swap file for the virtual memory. Appunti di informatica libera Copyright © Daniele Giacomini.

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However, it is important not to do that while you are working with MS-Windows: It is possible to install addtional software, by using the normal packages of the Slackware distribution. However there are netconfig to configure the network interface and pppconfig to configure a PPP connection over a switched line. To put informaitca remedy in the holes of the Artistic license, a new revision called Clarified Artistic License was developed. The word copyleft is an invention and represents inforamtica copyright of who, while defending his rights as the author, wants to defend freedom of his work, imposing that the original version of his work and derivated ones are kept free.

The freeware word is not tied to a strict definition, inforjatica usually refers to software that is freely available but doesn’t come along with the source. Software always has an owner, except for public domain software which is covered later in this bookwhich is such because he “owns the copyright “.

Also this time, it is worth listing some definitions for non-free software. The original Artistic license is by most people considered a bad formulated license, too vague and thus not good for preserving software freedom.

This means some copies or variations of this software are no more free. The latter is the study of the executable code geared towards learning how code operates. Appunti di informatica libera One of the basic elements of free software is the possibility to sell original or modified copies to make profit out of it.

Appunti di informatica libera

It can be copied and used but not modified. If you do not have this possibility, Info-ZIP can be found at: On its own this software it’s free, but since it has no copyright it doesn’t have a license either, so anybody is free to do whatever he wants with it, even take ownership of the rights.


The first one is human readable, while the second one is suited for machine execution and not for reading. Usually, the contract that rules the use of software is the license ; is always important to know deeply the terms of the license agreement for the software you intend to deal with.

The original BSD license fiacomini an explicit reference to the Berkeley university and explicitly states that the name cannot be used for advertising. To this extent someone said: EXE and similar disks cannot use its full performance potential;, just to avoid security problems.

Freedom 3, freedom to improve the program and to distribute such improvements also for this one we need the source code.

«a2», ex «Appunti di informatica libera», ex «Appunti Linux»

Shortly, a license belonging to the “copyleft” category blocks additional restrictions applied to it from who is going to redistribute the software modified or original whatever at the moment. In other words we could informtica that is free software with giacomnii limitation on usage and distribution for profit.

Meant this way the “free” prefix is only used to spot that there’s no price set on it, but is fairly different from freedom, which libeera for more requisites. It’s important to note that “freedom” of free software is not in the price – which can also be requested for the distribution service – but the possibility to use it without restrictions, to copy it as many times as you want, to distribute it and to modify it and even distribute the modified copies.

Actually, you should observe giqcomini appears as: Usually, to deal with it it is necessary to obtain a special permission, that most of the time limits its usage to just one computer or a well-defined environment. This can be done by using the installpkg script, in the same way used for the normal Slackware distribution.

This way, the patent doesn’t allow the use of the algorithm or protected idea without an explicit authorisation from the owner of the copyright.

There’s too much confusion around the BSD acronym, too many licenses similar to the Berkeley one are released under its name. The holder of the copyright becomes the owner of the work. Trying to avoid this little disadvantage different modified versions of this license have been created.


If you prefer, you could even install ZipSlack in another Dos device; the important thing is that the extration should always done in a root directory of that device. Use of the software can be granted for free or upon a payment. Following the same path, laws in these countries tend to put an illicit mark over reverse engineering of the software. Following this subtle difference it is important to spot out the difference of proprietary software from commercial software because they’re not the same thing.

Free software can be such only if it’s offered along with source code. Semi-free software is software that allow usage, copy, modification and distribution even after a modification for whatever reason except to make profit out of it.

Programming Tips and Tricks: Appunti di Informatica Libera [pdf]

The reason is that this kind of installation is not very efficient and presents risks: Free software is not necessarily copylefted and this happens when the license does not explicitly forbid applying additional restrictions from who redistribute the software. To better understand or mess up things as well, we can add that both non-free and non-commercial software do exist.

This owner can be the original author or maybe another holder which has gained the rights with a contract. Free software is such if it does allow usage by everybody, copy and distribution of it, both in its original ifnormatica and its modifications, for free or even by selling it. With the shareware word we refer to proprietary software that you are required to buy after a trial period even if it can be freely distributed.

Software which can not be sold, even though satisfying the four basic concepts listed here is not going be considered free software in this infogmatica work.