Flowchart of software development life cycle

Follow the link for more flowchart of software development life cycle. Unix-like operating system composed entirely of free software packaged by a team of volunteers. The project’s work is carried out over the Internet, guided by the Debian Project Leader and three foundational documents: the Debian Social Contract, the Debian Constitution, and the Debian Free Software Guidelines.

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One of the earliest operating systems based on the Linux kernel, Debian has been developed openly and distributed freely in the spirit of the GNU Project. This decision drew the support of the Free Software Foundation, which sponsored the project for one year from November 1994 to November 1995. Linux are also available, including FreeBSD and the GNU Hurd microkernel. Debian has access to online repositories that contain over 51,000 packages making it the largest collection of software in the world. 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. Physical disks can also be bought from retailers.

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