Debian full version download

Debian full version download

debian full version download

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Debian

Linux distribution based on free and open-source software
Debian 10 (buster) with the GNOME desktop environment
DeveloperThe Debian Project
OS familyUnix-like
Working stateCurrent
Source modelOpen source
Initial releaseSeptember 1993; 27 years ago (1993-09)
Latest release10.6 (Buster)[1] (September 26, 2020; 2 months ago (2020-09-26)) [±]
Latest preview11 (Bullseye)[2]
Repository
Available in75 languages
Update methodLong-term support
Package managerAPT (front-end), dpkg
Platformsx86-64, arm64, armel, armhf, i386, mips, mipsel, mips64el, ppc64el, s390x,[3]riscv64 (in progress)[4]
Kernel typeLinux kernel
UserlandGNU
Default user interface
LicenseDFSG-compatible licenses
Official websitewww.debian.org

Debian (/ˈdɛbiən/),[5][6] also known as Debian GNU/Linux, is a Linux distribution composed of free and open-source software, developed by the community-supported Debian Project, which was established by Ian Murdock on August 16, 1993. The first version of Debian (0.01) was released on September 15, 1993,[7] and its first stable version (1.1) was released on June 17, 1996.[8] The Debian Stable branch is the most popular edition for personal computers and servers. Debian is also the basis for many other distributions, most notably Ubuntu.

Debian is one of the oldest operating systems based on the Linux kernel. The project is coordinated over the Internet by a team of volunteers guided by the Debian Project Leader and three foundational documents: the Debian Social Contract, the Debian Constitution, and the Debian Free Software Guidelines. New distributions are updated continually, and the next candidate is released after a time-based freeze.

Since its founding, Debian has been developed openly and distributed freely according to the principles of the GNU Project. Because of this, the Free Software Foundation sponsored the project from November 1994 to November 1995. When the sponsorship ended, the Debian Project formed the nonprofit organizationSoftware in the Public Interest to continue financially supporting development.

Features[edit]

Debian 10 installation menu (BIOS Mode)
Graphical version of the Debian Installer
Debian 10 console login and welcome message

Debian has access to online repositories that contain over 51,000 packages.[9] Debian officially contains only free software, but non-free software can be downloaded and installed from the Debian repositories.[10] Debian includes popular free programs such as LibreOffice,[11]Firefox web browser, Evolution mail, K3b disc burner, VLC media player, GIMP image editor, and Evince document viewer.[10] Debian is a popular choice for servers, for example as the operating system component of a LAMP stack.[12][13]

Kernels[edit]

Several flavors of the Linux kernel exist for each port. For example, the i386 port has flavors for IA-32 PCs supporting Physical Address Extension and real-time computing, for older PCs, and for x86-64 PCs.[14] The Linux kernel does not officially contain firmware without sources, although such firmware is available in non-free packages and alternative installation media.[15][16]

Desktop environments[edit]

XFCE is default on CD images and non-Linux ports

Debian offers CD and DVD images specifically built for XFCE, GNOME, KDE, MATE, Cinnamon, LXDE, and LXQT.[17]MATE is officially supported,[18] while Cinnamon support was added with Debian 8.0 Jessie.[19] Less common window managers such as Enlightenment, Openbox, Fluxbox, IceWM, Window Maker and others are available.[20]

The default desktop environment of version 7.0 Wheezy was temporarily switched to Xfce, because GNOME 3 did not fit on the first CD of the set.[21] The default for the version 8.0 Jessie was changed again to Xfce in November 2013,[22] and back to GNOME in September 2014.[23]

Localization[edit]

Several parts of Debian are translated into languages other than American English, including package descriptions, configuration messages, documentation and the website.[24] The level of software localization depends on the language, ranging from the highly supported German and French to the barely translated Creek and Samoan.[25] The Debian 10 installer is available in 76 languages.[26]

Installation[edit]

Debian offers DVD and CD images for installation that can be downloaded using BitTorrent or jigdo. Physical discs can also be bought from retailers.[27] The full sets are made up of several discs (the amd64 port consists of 13 DVDs or 84 CDs),[28] but only the first disc is required for installation, as the installer can retrieve software not contained in the first disc image from online repositories.[29]

Debian offers different network installation methods. A minimal install of Debian is available via the netinst CD, whereby Debian is installed with just a base and later added software can be downloaded from the Internet. Another option is to boot the installer from the network.[30]

Installation images are hybrid on some architectures and can be used to create a bootable USB drive (Live USB).[31]

The default bootstrap loader is GNU GRUB version 2, though the package name is simply grub, while version 1 was renamed to grub-legacy. This conflicts with e.g. Fedora, where grub version 2 is named grub2.

The default desktop may be chosen from the DVD boot menu among GNOME, KDE Plasma, Xfce and LXDE, and from special disc 1 CDs.[32][33]

Live images[edit]

Debian releases live install images for CDs, DVDs and USB thumb drives, for IA-32 and x86-64 architectures, and with a choice of desktop environments. These Debian Live images allow users to boot from removable media and run Debian without affecting the contents of their computer.

A full install of Debian to the computer's hard drive can be initiated from the live image environment.[34]

Personalized images can be built with the live-build tool for discs, USB drives and for network booting purposes.[35]

History[edit]

Debian version history[edit]

Debian distribution codenames are based on the names of characters from the Toy Story films. Debian's unstable trunk is named after Sid, a character who regularly destroyed his toys.[36]

Founding (1993–1998)[edit]

Debian was first announced on August 16, 1993, by Ian Murdock, who initially called the system "the Debian Linux Release".[37][38] The word "Debian" was formed as a portmanteau of the first name of his then-girlfriend (later ex-wife) Debra Lynn and his own first name.[39] Before Debian's release, the Softlanding Linux System (SLS) had been a popular Linux distribution and the basis for Slackware.[40] The perceived poor maintenance and prevalence of bugs in SLS motivated Murdock to launch a new distribution.[41]

Debian 0.01, released on September 15, 1993, was the first of several internal releases.[7] Version 0.90 was the first public release,[7] providing support through mailing lists hosted at Pixar.[42] The release included the Debian Linux Manifesto, outlining Murdock's view for the new operating system. In it he called for the creation of a distribution to be maintained openly, in the spirit of Linux and GNU.[43]

The Debian project released the 0.9x versions in 1994 and 1995.[44] During this time it was sponsored by the Free Software Foundation for one year.[45] Ian Murdock delegated the base system, the core packages of Debian, to Bruce Perens and Murdock focused on the management of the growing project.[41] The first ports to non-IA-32 architectures began in 1995, and Debian 1.1 was released in 1996.[46] By that time and thanks to Ian Jackson, the dpkg package manager was already an essential part of Debian.[47]

In 1996, Bruce Perens assumed the project leadership. Perens was a controversial leader, regarded as authoritarian and strongly attached to Debian.[48] He drafted a social contract and edited suggestions from a month-long discussion into the Debian Social Contract and the Debian Free Software Guidelines.[49] After the FSF withdrew their sponsorship in the midst of the free software vs. open source debate,[50] Perens initiated the creation of the legal umbrella organizationSoftware in the Public Interest instead of seeking renewed involvement with the FSF.[46] He led the conversion of the project from a.out to ELF.[41] He created the BusyBox program to make it possible to run a Debian installer on a single floppy, and wrote a new installer.[51] By the time Debian 1.2 was released, the project had grown to nearly two hundred volunteers.[41] Perens left the project in 1998.[52]

Ian Jackson became the leader in 1998.[53] Debian 2.0 introduced the second official port, m68k.[44] During this time the first port to a non-Linux kernel, Debian GNU/Hurd, was started.[54] On December 2, the first Debian Constitution was ratified.[55]

Leader election (1999–2005)[edit]

From 1999, the project leader was elected yearly.[56] The Advanced Packaging Tool was deployed with Debian 2.1.[44] The number of applicants was overwhelming and the project established the new member process.[57][58] The first Debian derivatives, namely Libranet,[59]Corel Linux and Stormix's Storm Linux, were started in 1999.[46] The 2.2 release in 2000 was dedicated to Joel Klecker, a developer who died of Duchenne muscular dystrophy.[60]

In late 2000, the project reorganized the archive with new package "pools" and created the Testing distribution, made up of packages considered stable, to reduce the freeze for the next release.[46] In the same year, developers began holding an annual conference called DebConf with talks and workshops for developers and technical users.[61] In May 2001, Hewlett-Packard announced plans to base its Linux development on Debian.[62]

In July 2002, the project released version 3.0, code-named Woody, the first release to include cryptographic software, a free licensed KDE and internationalization.[63] During these last release cycles, the Debian project drew considerable criticism from the free software community because of the long time between stable releases.[64][65][66]

Some events disturbed the project while working on Sarge, as Debian servers were attacked by fire and hackers.[46][67] One of the most memorable was the Vancouver prospectus.[68][69][70] After a meeting held in Vancouver, release manager Steve Langasek announced a plan to reduce the number of supported ports to four in order to shorten future release cycles.[71] There was a large reaction because the proposal looked more like a decision and because such a drop would damage Debian's aim to be "the universal operating system".[72][73][74]

Sarge and later releases (2005–present)[edit]

The 3.1 Sarge release was made in June 2005. This release updated 73% of the software and included over 9,000 new packages. A new installer with a modular design, Debian-Installer, allowed installations with RAID, XFS and LVM support, improved hardware detection, made installations easier for novice users, and was translated into almost forty languages. An installation manual and release notes were in ten and fifteen languages respectively. The efforts of Skolelinux, Debian-Med and Debian-Accessibility raised the number of packages that were educational, had a medical affiliation, and ones made for people with disabilities.[46][75]

In 2006, as a result of a much-publicized dispute, Mozilla software was rebranded in Debian, with Firefox forked as Iceweasel and Thunderbird as Icedove. The Mozilla Corporation stated that software with unapproved modifications could not be distributed under the Firefox trademark. Two reasons that Debian modifies the Firefox software are to change the non-free artwork and to provide security patches.[76][77] In February 2016, it was announced that Mozilla and Debian had reached an agreement and Iceweasel would revert to the name Firefox; similar agreement was anticipated for Icedove/Thunderbird.[78]

A fund-raising experiment, Dunc-Tank, was created to solve the release cycle problem and release managers were paid to work full-time;[79] in response, unpaid developers slowed down their work and the release was delayed.[80] Debian 4.0 (Etch) was released in April 2007, featuring the x86-64 port and a graphical installer.[44] Debian 5.0 (Lenny) was released in February 2009, supporting Marvell's Orion platform and netbooks such as the Asus Eee PC.[81] The release was dedicated to Thiemo Seufer, a developer who died in a car crash.[82]

In July 2009, the policy of time-based development freezes on a two-year cycle was announced. Time-based freezes are intended to blend the predictability of time based releases with Debian's policy of feature based releases, and to reduce overall freeze time.[83] The Squeeze cycle was going to be especially short; however, this initial schedule was abandoned.[84] In September 2010, the backports service became official, providing more recent versions of some software for the stable release.[85]

Debian 6.0 (Squeeze) was released in February 2011, introduced Debian GNU/kFreeBSD as a technology preview, featured a dependency-based boot system, and moved problematic firmware to the non-free area.[17] Debian 7.0 (Wheezy) was released in May 2013, featuring multiarch support[86] and Debian 8.0 (Jessie) was released in April 2015, using systemd as the new init system.[87] Debian 9.0 (Stretch) was released in June 2017.[88][89] Debian 10.0 (Buster) was released in July 2019.[90] Debian is still in development and new packages are uploaded to unstable every day.[91]

Debian used to be released as a very large set of CDs for each architecture, but with the release of Debian 9 (Stretch) in 2017, these have been dropped.[92]

Throughout Debian's lifetime, both the Debian distribution and its website have won various awards from different organizations,[93] including Server Distribution of the Year 2011,[94]The best Linux distro of 2011,[95] and a Best of the Net award for October 1998.[96]

On December 2, 2015, Microsoft announced that they would offer Debian GNU/Linux as an endorsed distribution on the Azure cloud platform.[97][98] Microsoft has also added a user environment to their Windows 10 desktop operating system called Windows Subsystem for Linux that offers a Debian subset.[99]

Packages[edit]

Package management operations can be performed with different tools available on Debian, from the lowest level command to graphical front-ends like Synaptic. The recommended standard for administering packages on a Debian system is the toolset.[100]

dpkg provides the low-level infrastructure for package management.[101] The dpkg database contains the list of installed software on the current system. The dpkg command tool does not know about repositories. The command can work with local .deb package files, and information from the dpkg database.[102]

APT tools[edit]

Using Aptitude to view Debian package details
Package installed with Aptitude

An Advanced Packaging Tool (APT) allows administering an installed Debian system to retrieve and resolve package dependencies from repositories. APT share dependency information and cached packages.[100]

  • The command itself is intended as an end user interface and enables some options better suited for interactive usage by default compared to more specialized APT like apt-get and apt-cache explained below.
  • and are command tools of the standard apt package. apt-get installs and removes packages, and apt-cache is used for searching packages and displaying package information.[100]
  • Aptitude is a command line tool that also offers a text-based user interface. The program comes with enhancements such as better search on package metadata.[100]

GDebi and other front-ends[edit]

Screenshot of GDebi Package installer

GDebi is an APT tool which can be used in command-line and on the GUI.[103] GDebi can install a local .deb file via the command line like the dpkg command, but with access to repositories to resolve dependencies.[104] Other graphical front-ends for APT include Software Center,[105]Synaptic[106] and Apper.[107]

GNOME Software is a graphical front-end for PackageKit, which itself can work on top of various software packaging systems.

Repositories[edit]

The Debian Free Software Guidelines (DFSG) define the distinctive meaning of the word "free" as in "free and open-source software".[108] Packages that comply with these guidelines, usually under the GNU General Public License, Modified BSD License or Artistic License,[109] are included inside the main area;[110] otherwise, they are included inside the non-free and contrib areas. These last two areas are not distributed within the official installation media, but they can be adopted manually.[108]

Non-free includes packages that do not comply with the DFSG,[111] such as documentation with invariant sections and proprietary software,[112][113] and legally questionable packages.[111] Contrib includes packages which do comply with the DFSG but fail other requirements. For example, they may depend on packages which are in non-free or requires such for building them.[111]

Richard Stallman and the Free Software Foundation have criticized the Debian project for hosting the non-free repository and because the contrib and non-free areas are easily accessible,[114][115] an opinion echoed by some in Debian including the former project leader Wichert Akkerman.[116] The internal dissent in the Debian project regarding the non-free section has persisted,[117] but the last time it came to a vote in 2004, the majority decided to keep it.[118]

Branches[edit]

A Debian 10.0 Buster box cover

Three branches of Debian (also called releases, distributions or suites) are regularly maintained:[119]

  • Stable is the current release and targets stable and well-tested software needs.[120]Stable is made by freezing Testing for a few months where bugs are fixed and packages with too many bugs are removed; then the resulting system is released as stable. It is updated only if major security or usability fixes are incorporated.[110] This branch has an optional backports service that provides more recent versions of some software.[85]Stable's CDs and DVDs can be found in the Debian website.[28]
  • Testing is the preview branch that will eventually become the next major release. The packages included in this branch have had some testing in unstable but they may not be fit for release yet. It contains newer packages than stable but older than unstable. This branch is updated continually until it is frozen.[110]Testing's CDs and DVDs can be found on the Debian website.[28]
  • Unstable, always codenamed sid, is the trunk. Packages are accepted without checking the distribution as a whole.[110] This branch is usually run by software developers who participate in a project and need the latest libraries available, and by those who prefer bleeding-edge software.[119] Debian does not provide full Sid installation discs, but rather a minimal ISO that can be used to install over a network connection. Additionally, this branch can be installed through a system upgrade from stable or testing.[121]

Other branches in Debian:

  • Oldstable is the prior stable release.[110] It is supported by the Debian Security Team until one year after a new stable is released, and since the release of Debian 6, for another 2 years through the Long Term Support project.[122] Eventually, oldstable is moved to a repository for archived releases.[110]
  • Oldoldstable is the prior oldstable release. It is supported by the Long Term Support community. Eventually, oldoldstable is moved to a repository for archived releases. Debian 8 is the current Oldoldstable release.
  • Experimental is a temporary staging area of highly experimental software that is likely to break the system. It is not a full distribution and missing dependencies are commonly found in unstable, where new software without the damage chance is normally uploaded.[110]

The snapshot archive provides older versions of the branches. They may be used to install a specific older version of some software.[123]

Numbering scheme[edit]

Stable and oldstable get minor updates, called point releases; as of September 2020[update], the stable release is version 10.6,[124] released on September 26, 2020; 2 months ago (2020-09-26), and the oldstable release is version 9.13[125]

The numbering scheme for the point releases up to Debian 4.0 was to include the letter r (for revision)[126] after the main version number and then the number of the point release; for example, the latest point release of version 4.0 is 4.0r9.[127] This scheme was chosen because a new dotted version would make the old one look obsolete and vendors would have trouble selling their CDs.[128]

From Debian 5.0, the numbering scheme of point releases was changed, conforming to the GNU version numbering standard;[129] the first point release of Debian 5.0 was 5.0.1 instead of 5.0r1.[130] The numbering scheme was once again changed for the first Debian 7 update, which was version 7.1.[131] The r scheme is no longer in use, but point release announcements include a note about not throwing away old CDs.[132]

Code names[edit]

The code names of Debian releases are names of characters from the Toy Story films.

Debian 8, the old old stable, was named Jessie after the cowgirl in Toy Story 2, Toy Story 3 and Toy Story 4.

Debian 9, the current old stable, was named Stretch after the toy rubber octopus in Toy Story 3.

Debian 10, the current stable, is named Buster,[133] after the pet dachshund in Toy Story.

Debian 11 will be called Bullseye,[134] after Woody's horse.

Debian 12 will be called Bookworm,[135] after the intelligent worm toy with a built-in flash-light seen in Toy Story 3.

Debian 13 will be called Trixie, after the blue plastic toy Triceratops seen in Toy Story 3.[136]

The unstable suite is permanently nicknamed Sid, after the emotionally unstable boy next door who regularly destroyed toys, with many of his own toys being either destroyed, have missing pieces, or replaced with parts from other toys.[137]

This naming tradition came about because Bruce Perens was involved in the early development of Debian while working at Pixar.[48]

Derivatives and flavors[edit]

Debian is one of the most popular Linux distributions, and many other distributions have been created from the Debian codebase.[138] As of 2018[update], DistroWatch lists 141 active Debian derivatives.[139] The Debian project provides its derivatives with guidelines for best practices and encourages derivatives to merge their work back into Debian.[140][141]

Pure blends[edit]

Debian Pure Blends are subsets of a Debian release configured out-of-the-box for users with particular skills and interests.[142] For example, Debian Jr. is made for children, while Debian Science is for researchers and scientists.[143] The complete Debian distribution includes all available Debian Pure Blends.[142] "Debian Blend" (without "Pure") is a term for a Debian-based distribution that strives to become part of mainstream Debian, and have its extra features included in future releases.[144]

Debian GNU/kFreeBSD[edit]

Logo of Debian GNU/kFreeBSD

Debian GNU/kFreeBSD is a discontinued[145] Debian flavor. It used the FreeBSDkernel and GNUuserland. The majority of software in Debian GNU/kFreeBSD was built from the same sources as Debian, with some kernel packages from FreeBSD. The k in kFreeBSD is an abbreviation for kernel, which refers to the FreeBSD kernel. Before discontinuing the project, Debian maintained i386 and amd64 ports. The last version of Debian kFreeBSD was Debian 8 (Jessie) RC3.

Debian GNU/kFreeBSD was created in 2002.[146] It was included in Debian 6.0 (Squeeze) as a technology preview, and in Debian 7.0 (Wheezy) as an official port. Debian GNU/kFreeBSD was discontinued as an officially supported platform as of Debian 8.0. Debian developers cited OSS, pf, jails, NDIS, and ZFS as reasons for being interested in the FreeBSD kernel.[147]

It has not been updated since Debian 8.[148] As of July 2019, however, the operating system continues to be maintained unofficially.[149]

Debian GNU/Hurd[edit]

Debian GNU/Hurd is a flavor based on the Hurdmicrokernel, instead of Linux. Debian GNU/Hurd has been in development since 1998,[150] and made a formal release in May 2013, with 78% of the software packaged for Debian GNU/Linux ported to the GNU Hurd.[151] Hurd is not yet an official Debian release, and is maintained and developed as an unofficial port.

Debian GNU/Hurd is distributed as an installer CD (running the official Debian installer) or ready-to-run virtual disk image (Live CD, Live USB). The CD uses the IA-32 architecture, making it compatible with IA-32 and x86-64 PCs. The current version of Debian GNU/Hurd is 2019, published in July 2019.[152]

Logo[edit]

The Debian "swirl" logo was designed by Raul Silva[153][154] in 1999 as part of a contest to replace the semi-official logo that had been used.[155] The winner of the contest received an @debian.org email address, and a set of Debian 2.1 install CDs for the architecture of their choice. There has been no official statement from the Debian project on the logo's meaning, but at the time of the logo's selection, it was suggested that the logo represented the magic smoke ( or the genie ) that made computers work.[156][157][158]

One theory about the origin of the Debian logo is that Buzz Lightyear, the chosen character for the first named Debian release, has a swirl in his chin.[159][160]Stefano Zacchiroli also suggested that this swirl is the Debian one. Buzz Lightyear's swirl is a more likely candidate as the codenames for Debian are names of Toy Story characters. The developer of Debian also used to work for Pixar.[161]

Multimedia support[edit]

Multimedia support has been problematic in Debian regarding codecs threatened by possible patent infringements, without sources or under too restrictive licenses,[162] and regarding technologies such as Adobe Flash.[81] Even though packages with problems related to their distribution could go into the non-free area, software such as libdvdcss is not hosted at Debian.[163]

A notable third party repository exists, formerly named debian-multimedia.org,[164][165][166] providing software not present in Debian such as Windows codecs, libdvdcss and the Adobe Flash Player.[167] Even though this repository is maintained by Christian Marillat, a Debian developer, it is not part of the project and is not hosted on a Debian server. The repository provides packages already included in Debian, interfering with the official maintenance. Eventually, project leader Stefano Zacchiroli asked Marillat to either settle an agreement about the packaging or to stop using the "Debian" name.[168] Marillat chose the latter and renamed the repository to deb-multimedia.org. The repository was so popular that the switchover was announced by the official blog of the Debian project.[169]

Hardware support[edit]

Hardware requirements[edit]

Hardware requirements are at least those of the kernel and the GNU toolsets.[170] Debian's recommended system requirements depend on the level of installation, which corresponds to increased numbers of installed components:[171]

Type Minimum RAM size Recommended RAM size Minimum processor clock speed (IA-32) Hard-drive capacity
Non-desktop 256 MB512 MB 2 GB
Desktop 512 MB 2 GB 1 GHz 10 GB

The real minimum memory requirements depend on the architecture and may be much less than the numbers listed in this table. It is possible to install Debian with 170 MB of RAM for x86-64;[171] the installer will run in low memory mode and it is recommended to create a swap partition.[32] The installer for z/Architecture requires about 20 MB of RAM, but relies on network hardware.[171][172] Similarly, disk space requirements, which depend on the packages to be installed, can be reduced by manually selecting the packages needed.[171] As of May 2019[update], no Pure Blend exists that would lower the hardware requirements easily.[173]

It is possible to run graphical user interfaces on older or low-end systems, but the installation of window managers instead of desktop environments is recommended, as desktop environments are more resource intensive. Requirements for individual software vary widely and must be considered, with those of the base operating environment.[171]

Architecture ports[edit]

Official ports[edit]

As of the Stretch release[update], the official ports are:[174]

  • amd64: x86-64 architecture with 64-bit userland and supporting 32-bit software
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