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FreeBSD Source:

This is the top level of the FreeBSD source directory.

FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.

For copyright information, please see the file COPYRIGHT in this directory. Additional copyright information also exists for some sources in this tree - please see the specific source directories for more information.

The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7), config(8), FreeBSD handbook on building userland, and Handbook for kernels for more information, including setting make(1) variables.

For information on the CPU architectures and platforms supported by FreeBSD, see the FreeBSD website's Platforms page.

For official FreeBSD bootable images, see the release page.

Source Roadmap:

DirectoryDescription
binSystem/user commands.
cddlVarious commands and libraries under the Common Development and Distribution License.
contribPackages contributed by 3rd parties.
cryptoCryptography stuff (see crypto/README).
etcTemplate files for /etc.
gnuCommands and libraries under the GNU General Public License (GPL) or Lesser General Public License (LGPL). Please see gnu/COPYING and gnu/COPYING.LIB for more information.
includeSystem include files.
kerberos5Kerberos5 (Heimdal) package.
libSystem libraries.
libexecSystem daemons.
releaseRelease building Makefile & associated tools.
rescueBuild system for statically linked /rescue utilities.
sbinSystem commands.
secureCryptographic libraries and commands.
shareShared resources.
standBoot loader sources.
sysKernel sources (see sys/README.md).
targetsSupport for experimental DIRDEPS_BUILD
testsRegression tests which can be run by Kyua. See tests/README for additional information.
toolsUtilities for regression testing and miscellaneous tasks.
usr.binUser commands.
usr.sbinSystem administration commands.

For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see FreeBSD Handbook.