Questions tagged [open-source]

Questions about open-source software, licensing and other related.

Open Source as:

  1. The Philosophy: A method and philosophy for software licensing and distribution designed to encourage use and improvement of software written by volunteers by ensuring that anyone can copy the source code and modify it freely.

  2. In Modern Context: The term "open source" is now more widely used than the earlier term "free software" (promoted by the Free Software Foundation) but has broadly the same meaning - free of distribution restrictions, not necessarily free of charge.

  3. The License: An open-source license is a type of license for computer software and other products that allows the source code, blueprint or design to be used, modified and/or shared under defined terms and conditions. This allows end users to review and modify the source code, blueprint or design for their own customization, curiosity or troubleshooting needs. Open-source licensed software is mostly available free of charge, though this does not necessarily have to be the case.

    There are various open source licenses available. Programmers can choose an appropriate license to use when distributing their programs.

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Command line tool to crop PDF files

I am looking for an open source command line tool to crop PDF file just like we can do in Adobe Acrobat Pro. I have tried PdfTk, ImageMagick, PyPDF, and GhostScript—all with no success so far.
65
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5 answers

Is there a difference between free software and open source software?

I am a bit confused about these two terms. Are there differences between them?
Mysterio
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How to make sure I'm not using any proprietary software after installation?

I know I can check the currently installed non-free software with the following command (assuming aptitude is FOSS): aptitude search '?installed (?section(restricted) | ?section(multiverse))' And I can remove the "restricted" and "multiverse"…
35
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Which big computer companies support the Ubuntu project financially?

When looking for hardware, I often try to find out if the manufacturer employs open source developers and things like that. I know Canonical has relations with a couple of big computer companies, but who, apart from Canonical, is supporting the…
27
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7 answers

How do I digitally sign PDFs in 2019?

This older post is either pointing to mostly dead software or the answers are not fully applicable. I want to take a PDF document, stick in an image of my signature and have this be digitally signed using a certificate so that the document is…
RedM
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26
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How do I legally make an open-source version of a closed-source game?

Is it legal to make an open-source version of a closed-source game (and expansion pack) to distribute to other users? I want to do that for an old game called Age of Empires 2.
hunter
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Why is there proprietary software in Ubuntu Software Center?

My question is very simple: how to get rid of proprietary software from the Ubuntu Software Center (USC)? It doesn’t work to enable or disable repositories. Even with just the “universe” and “main” repositories active you can still see plenty of…
Tio TROM
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18
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3 answers

Why do we have non-free software in the official repositories?

The Ubuntu wiki describes the "sections" of the official Ubuntu repositories as follows: Main - Officially supported software. Restricted - Supported software that is not available under a completely free license. Universe - Community…
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Does Ubuntu contain Non-free kernel blobs and other non-free system components?

I heard Richard Stallman say that Ubuntu contains non-free blobs. Why does it have such blobs and what functions do these non-free blobs and system components do that free software can't? Does Canonical include these to keep control of Ubuntu…
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4 answers

Open source Skype application

I'm looking for an open source Skype application that I can use instead of the current beta we have to install.
14
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5 answers

Is there a Document scanning and archiving software?

I'm looking for some kind of (free or open source) document management application which should allow me to store paper documents in my personal computer allowing me to add fields of information with data entry to be able to get the digital copy…
12
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1 answer

Open Source command line tool for optimizing PDF

Are there any open-source command line tool for optimizing PDF in Ubuntu. I have used Ghost Script and i am able to convert the PDF into 72 dpi, gs -sDEVICE=pdfwrite \ -dCompatibilityLevel=1.4 \ -dPDFSETTINGS=/screen \ -dNOPAUSE -dQUIET…
Rakesh
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Are apt packages in main and universe ALWAYS guaranteed to be built from source by Ubuntu or Debian mantainers?

I wonder if Canonical (and/or Debian) provide any sort of guarantee that all packages in main and universe repos are always either built from source by themselves, or verified by them (in case of deterministic or signed reproducible builds) as…
10
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3 answers

Open Source friendly Graphics Card manufacturers?

Everyone knows that in general, Nvidia has the best supported graphics cards under Linux. But I don't want to buy into Nvidia's proprietary drivers if I don't have to. ATI has open source drivers, but they have almost no support, and their open…
Sepero
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8
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How to get the source code of a project from launchpad

How to get the source code of a project from launchpad
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