Index: en_US.ISO8859-1/books/handbook/introduction/chapter.xml =================================================================== --- en_US.ISO8859-1/books/handbook/introduction/chapter.xml +++ en_US.ISO8859-1/books/handbook/introduction/chapter.xml @@ -77,142 +77,91 @@ What Can &os; Do? - &os; has many noteworthy features. Some of these + &os; is a complete, Open Source, standards-compliant + Unix system, with all the associated features that are + nowadays taken for granted, such as preemptive multitasking, + memory protection, virtual memory, multi-user facilities, SMP + support, all the Open Source development tools for different + languages and frameworks, and desktop features centered around + X Window System, KDE, or GNOME. Its particular strenghts are: - Preemptive multitasking - - preemptive multitasking - with dynamic priority adjustment to ensure - smooth and fair sharing of the computer between - applications and users, even under the heaviest of - loads. + Liberal Open Source license, + which grants you rights to freely modify and extend + its source code and incorporate it in both Open Source + projects and closed products without imposing + restrictions typical to copyleft licenses, as well + as avoiding potential license incompatibility + problems. - Multi-user facilities - multi-user facilities - which allow many people to use a &os; system - simultaneously for a variety of things. This means, for - example, that system peripherals such as printers and tape - drives are properly shared between all users on the system - or the network and that individual resource limits can be - placed on users or groups of users, protecting critical - system resources from over-use. + Strong TCP/IP networking + TCP/IP + networking - &os; + implements industry standard protocols with ever + increasing performance and scalability. This makes + it a good match in both server, and routing/firewalling + roles - and indeed many companies and vendors use it + precisely for that purpose. - Strong TCP/IP - networking - TCP/IP networking - with support for industry standards such as - SCTP, DHCP, NFS, NIS, PPP, SLIP, IPsec, and IPv6. This - means that your &os; machine can interoperate easily with - other systems as well as act as an enterprise server, - providing vital functions such as NFS (remote file access) - and email services or putting your organization on the - Internet with WWW, FTP, routing and firewall (security) - services. + Fully integrated OpenZFS support, + including root-on-ZFS, ZFS Boot Environments, fault + management, administrative delegation, support for jails, + &os; specific documentation, and system installer + support. - Memory protection - memory protection - ensures that applications (or users) cannot - interfere with each other. One application crashing will - not affect others in any way. + Extensive security features, + from the Mandatory Access Control framework to Capsicum + capability and sandbox mechanisms. - The industry standard - X Window System - X Window System - (X11R7) can provide a graphical user - interface (GUI) on any machine and comes with full - sources. + Over 30 thousand prebuilt + packages for all supported architectures, + and the Ports Collection which makes it easy to build your + own, customized ones. - - - binary compatibility - Linux - - Binary compatibility with many - programs built for Linux. + Documentation - in addition + to Handbook and books from different authors that cover + topics ranging from system administration to kernel + internals, there are also the &man.man.1; pages, not only + for userspace daemons, utilities, and configuration files, + but also for kernel driver APIs (section 9) and individual + drivers (section 4). - Thousands of ready-to-run - applications are available from the &os; - ports and - packages collection. Why search the - net when you can find it all right here? + Simple and consistent repository structure + and build system - &os; uses a single + repository for all of its components, both kernel and + userspace. This, along with an unified and easy to + customize build system and a well thought out development + process makes it easy to integrate &os; with build + infrastructure for your own product. - Thousands of additional and - easy-to-port applications are - available on the Internet. &os; is source code compatible - with most popular commercial &unix; systems and thus most - applications require few, if any, changes to - compile. + Staying true to Unix philosophy, + preferring composability instead of monolithic all + in one daemons with hardcoded behaviour. - - Demand paged virtual - memory - virtual memory - and merged VM/buffer cache - design efficiently satisfies applications with large - appetites for memory while still maintaining interactive - response to other users. - - SMP - Symmetric Multi-Processing - (SMP) - support for machines with multiple - CPUs. + binary compatibility + Linux + Binary compatibility with Linux, + which makes it possible to run many Linux binaries without + the need for virtualisation. - - - - - compilers - C - - - compilers - C++ - - A full complement of C - and C++ - development tools. - Many additional languages for advanced research - and development are also available in the ports and - packages collection. - - - - Source code - source code - for the entire system means you have the - greatest degree of control over your environment. Why be - locked into a proprietary solution at the mercy of your - vendor when you can have a truly open system? - - - - Extensive online - documentation. - - - - And many more! - &os; is based on the 4.4BSD-Lite @@ -223,11 +172,13 @@ at the University of California at Berkeley, and carries on the distinguished tradition of BSD systems development. In addition to the fine work provided by CSRG, - the &os; Project has put in many thousands of hours in - fine tuning the system for maximum performance and reliability + the &os; Project has put in many thousands of man-hours + into extending the functionality and fine-tuning the system + for maximum performance and reliability in real-life load situations. &os; offers performance and - reliability on par with commercial offerings, combined with - many cutting-edge features not available anywhere else. + reliability on par with other Open Source and commercial + offerings, combined with cutting-edge features not available + anywhere else. The applications to which &os; can be put are truly limited only by your own imagination. From software @@ -237,9 +188,7 @@ likely that you can do it with &os; too! &os; also benefits significantly from literally thousands of high quality applications developed by research centers and universities - around the world, often available at little to no cost. - Commercial applications are also available and appearing in - greater numbers every day. + around the world, often available at little to no cost. Because the source code for &os; itself is generally available, the system can also be customized to an almost