Explaining BSD Last modified on 2018-06-29 07:33:14 by eadler. Abstract In the open source world, the word “Linux” is almost synonymous with “Operating System”, but it is not the only open source UNIX® operating system. So what is the secret? Why is BSD not better known? This white paper addresses these and other questions. Throughout this paper, differences between BSD and Linux will be noted like this. BSD stands for “Berkeley Software Distribution”. The BSD kernel, which handles process scheduling, memory management, symmetric multi-processing (SMP), device drivers, etc.The C library, the base API for the system.The BSD C library is based on code from Berkeley, not the GNU project.Utilities such as shells, file utilities, compilers and linkers.Some of the utilities are derived from the GNU project, others are not.The X Window system, which handles graphical display.The X Window system used in most versions of BSD is maintained by the X.Org project.
Console Server Last modified on 2014-04-28 by wblock. Abstract This document describes how you can use FreeBSD to set up a “console server”. You have a computer room with lots of UNIX® server machines and lots of communications hardware. You need access to the console because when things break, that is where error messages go. If we are going to play about with consoles, then there are a couple of other things that would be great: Remote access.
DragonFlyBSD PC-BSD This release of PC-BSD® unhinges from the KDE Desktop Environment and adds support for GNOME, LXDE, and more! A unified Control Panel is available across all desktop environments to ensure a consistent experience configuring your desktop. The Joule Edition was released in January 2014. Casual Computing PC-BSD is a desktop operating system based on FreeBSD. Simple. From the installation of the system to its use thereafter, PC-BSD's goals are to never have a user run aground of viruses, driver issues, or anything that would impede ease-of-use and general reliability.
Configure a service to start at boot time Author: name contact BSD flavour Reviewer: Cezary Morga email@example.com FreeBSD Reviewer: name contact BSD flavour Concept Recognize that the BSD boot process does not use runlevels. Introduction The BSDs all run the /etc/rc system startup script. Note that the BSDs do not have System V-style runlevels, such as found on Linux, where different startup scripts are available for networking, X11 workstation, server, etc. TODO: should this mention single-user mode here? The /etc/rc scripts vary on each system, but all basically do the same steps: Load the "rc.conf" configurations.Enable special virtual disks, like concatenated disks, Vinum Logical Volume Manager, and RAID devices.Enable swap device for virtual memory.Check file systems.Mount special disks or pseudo-devices.Mount the main / (root) disk partition.Set device-specific flags for terminals. Some other tasks that may be enabled include: TODO: more to list The BSDs primarily use /etc/rc.conf to configure what is started up. ""inetd_enable=YES
Use an rc(8) script to determine if a service is running and start, restart or stop it as required Author: hubertf contact BSD flavour Reviewer: name contact BSD flavour Concept In addition to directly sending signals to processes, realize that BSD systems provide scripts which can be used to check the status of services and to stop, start and restart them as required. Be aware of the locations of these scripts on each of the BSD systems. Note: this objective does not apply to OpenBSD. Introduction In NetBSD, FreeBSD, and DragonFly, the traditional system startup script /etc/rc has been split into tiny scripts that start and stop individual services (similar to what SysVR4 systems have done for some time). Note: OpenBSD does not use this rc.d script system. The advantage this approach has to the system administrator that he doesn't need to know any details about how to start or stop a system - running the corresponding rc.d script with an argument of either 'start' or 'stop' is sufficient. Examples Here is a list of rc.d scripts from a NetBSD 4.0 system: Practice Exercises More information
10 - System Management [FAQ Index][To Section 9 - Migrating to OpenBSD][To Section 11 - The X Window System] Table of Contents 10.1 - Why does it say that I'm in the wrong group when I try to su root? On OpenBSD, users who are in the wheel group are allowed to use su(1) to become root. Otherwise, the user will receive an error. If you are creating new users with adduser(8), you can add them to the wheel group by answering "wheel" at the "Invite user into other groups:" prompt. wheel:*:0:root,ericj If you want to give access to superuser privileges without adding users to the wheel group, use sudo(8). 10.2 - How do I duplicate a filesystem? To duplicate your filesystem use dump(8) and restore(8). # cd /SRC; dump 0f - . | (cd /DST; restore -rf - ) dump is designed to give you plenty of backup capabilities, and it may be an overkill if you just want to duplicate a part of a (or an entire) filesystem. # cd /SRC; tar cf - . | (cd /DST; tar xpf - ) 10.3 - How do I start daemons with the system? How does rc(8) work? #!
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