----- Unsent message follows -----Received: by coefw05.ccc.edu; (5.65v3.2/1.3/10May95) id AA25349; Sat, 9 Aug 1997 10:36:02 -0500Received: from cc:Mail by ccgate.ccc.eduid AA871147902; Wed, 06 Aug 97 01:44:35 cstDate: Wed, 06 Aug 97 01:44:35 cstFrom: Linux-Ne...@senator-bedfellow.mit.eduMessage-Id: To: Linux-Ne...@senator-bedfellow.mit.eduSubject: Linux-Networking Digest #335Linux-Networking Digest #335, Volume #6 Wed, 6 Aug 97 01:44:35 EDTContents: Linux INFO-SHEET (part 1/1) (Michael K. Johnson)----------------------------------------------------------------------------From: Michael K. Johnson Crossposted-To: comp.os.linux.announce,comp.os.linux.hardware,comp.os.linux.setup,comp.os.linux.x,comp.os.linux.answers,comp.os.linux.misc,comp.answers,news.answersSubject: Linux INFO-SHEET (part 1/1)Date: 5 Aug 1997 23:15:48 -0400Archive-name: linux/info-sheetLast-modified: 20 Jan 97=====BEGIN PGP SIGNED MESSAGE=====*** The `Linux INFO-SHEET' is posted automatically by the*** Linux HOWTO coordinator, Greg Hankins . Please*** direct any comments or questions about this HOWTO to the author,*** Michael K. Johnson .- --- BEGIN Linux INFO-SHEET part 1/1 --- Linux Information Sheet Michael K. Johnson, john...@redhat.com v4.11, 13 January 1997 This document provides basic information about the Linux operating system, including an explanation of Linux, a list of features, some requirements, and some resources. 1. Introduction to Linux Linux is a completely free reimplementation of the POSIX specification, with SYSV and BSD extensions (which means it looks like Unix, but does not come from the same source code base), which is available in both source code and binary form. It is copyrighted by Linus B. Torvalds (Linus.T...@Helsinki.FI) and other contributors, and is freely redistributable under the terms of the GNU Public License. Linux is not public domain, nor is it `shareware'. It is `free' software, commonly called freeware, and you may give copies away, but you must also give the source with it or make it available in the same way. If you distribute any modifications, you are legally bound to distribute the source for those modifications. See the GNU General Public License for details. A copy is included with the Linux source, or you can get a copy via ftp from prep.ai.mit.edu in /pub/gnu/COPYING Linux is still free as of version 2.0, and will continue to be. Because of the nature of the GNU copyright which Linux is subject to, it would be illegal for it to be made not free. Note carefully: it is perfectly legal to charge money for distributing Linux, so long as you also distribute the source code. This is a generalization; if you want the fine points, read the GPL. Linux runs on 386/486/Pentium machines with ISA, EISA, PCI and VLB busses. MCA (IBM's proprietary bus) is not currently well-supported, although support has been added to the current development tree, 2.1.x. If you are interested, see There is a port in progress for multiple Motorola 680x0 platforms (currently running on some Amigas, Ataris, and VME machines), which now works quite well. It requires a 68020 with an MMU, a 68030, 68040, or a 68060, and also requires an FPU. Networking and X now work. Linux runs well on DEC's Alpha CPU, currently supporting the "Jensen", "NoName", "Cabriolet", "Universal Desktop Box" (better known as the Multia), and many other platforms. For more information, see Linux runs well on Sun SPARCs; most sun4c and sun4m machines now run Linux, with support for sun4u in active development. Red Hat Linux is (as of this writing) the only Linux distribution available for SPARCs; see Linux is being actively ported to the PowerPC architecture, including PowerMac (Nubus and PCI), Motorola, IBM, and Be machines. Ports to other machines, including MIPS and ARM, are under way and showing various amounts of progress. Don't hold your breath, but if you are interested and able to contribute, you may well find other developers who wish to work with you. Linux is no longer considered to be in beta testing, as version 1.0 was released on March 14, 1994. There are still bugs in the system, and new bugs will creep up and be fixed as time goes on. Because Linux follows the ``open development model'', all new versions will be released to the public, whether or not they are considered ``production quality''. However, in order to help people tell whether they are getting a stable version or not, the following scheme has been implemented: Versions 1.x.y, where x is an even number, are stable versions, and only bug fixes will be applied as y is incremented. So from version 1.2.2 to 1.2.3, there were only bug fixes, and no new features. Versions 1.x.y, where x is an odd number, are beta-quality releases for developers only, and may be unstable and may crash, and are having new features added to them all the time. >From time to time, as the currect development kernel stabilizes, it will be frozen as the new ``stable'' kernel, and development will continue on a new development version of the kernel. The current stable version is 2.0.27 (this will continue to change as new device drivers get added and bugs fixed), and developement has also started on the experimental 2.1.x kernels. If 2.0.x is too new for you, you may want to stick with 1.2.13 for the time being. However, the latest releases of 2.0 have proved quite stable. Do note that in order to upgrade from 1.2 to 2.0, you need to upgrade some utilities as well; you may wish to upgrade to the latest version of your Linux distribution in order to obtain those utilities. The Linux kernel source code also contains a file, Documentation/Changes, which explains these changes and more. Most versions of Linux, beta or not, are quite stable, and you can keep using those if they do what you need and you don't want to be on the bleeding edge. One site had a computer running version 0.97p1 (dating from the summer of 1992) for over 136 days without an error or crash. (It would have been longer if the backhoe operator hadn't mistaken a main power transformer for a dumpster...) Others have posted uptimes in excess of a year. One site still had a computer running Linux 0.99p15s over 600 days at last report. One thing to be aware of is that Linux is developed using an open and distributed model, instead of a closed and centralized model like much other software. This means that the current development version is always public (with up to a week or two of delay) so that anybody can use it. The result is that whenever a version with new functionality is released, it almost always contains bugs, but it also results in a very rapid development so that the bugs are found and corrected quickly, often in hours, as many people work to fix them. In contrast, the closed and centralized model means that there is only one person or team working on the project, and they only release software that they think is working well. Often this leads to long intervals between releases, long waiting for bug fixes, and slower development. Of course, the latest release of such software to the public is often of higher quality, but the development speed is generally much slower. As of January 13, 1997, the current stable version of Linux is 2.0.27, and the latest development version is 2.1.20. 2. Linux Features 7 multitasking: several programs running at once. 7 multiuser: several users on the same machine at once (and no two- user licenses!). 7 multiplatform: runs on many different CPUs, not just Intel. 7 multiprocessor: SMP support is available on the Intel and SPARC platforms (with work currently in progress on other platforms), and Linux is used in several loosely-coupled MP applications, including Beowulf systems (see ) and the Fujitsu AP1000+ SPARC-based supercomputer. 7 runs in protected mode on the 386. 7 has memory protection between processes, so that one program can't bring the whole system down. 7 demand loads executables: Linux only reads from disk those parts of a program that are actually used. 7 shared copy-on-write pages among executables. This means that multiple process can use the same memory to run in. When one tries to write to that memory, that page (4KB piece of memory) is copied somewhere else. Copy-on-write has two benefits: increasing speed and decreasing memory use. 7 virtual memory using paging (not swapping whole processes) to disk: to a separate partition or a file in the filesystem, or both, with the possibility of adding more swapping areas during runtime (yes, they're still called swapping areas). A total of 16 of these 128 MB swapping areas can be used at once, for a theoretical total of 2 GB of useable swap space. It is simple to increase this if necessary, by changing a few lines of source code. 7 a unified memory pool for user programs and disk cache, so that all free memory can be used for caching, and the cache can be reduced when running large programs. 7 dynamically linked shared libraries (DLL's), and static libraries too, of course. 7 does core dumps for post-mortem analysis, allowing the use of a debugger on a program not only while it is running but also after it has crashed. 7 mostly compatible with POSIX, System V, and BSD at the source level. 7 through an iBCS2-compliant emulation module, mostly compatible with SCO, SVR3, and SVR4 at the binary level. 7 all source code is available, including the whole kernel and all drivers, the development tools and all user programs; also, all of it is freely distributable. Plenty of commercial programs are being provided for Linux without source, but everything that has been free, including the entire base operating system, is still free. 7 POSIX job control. 7 pseudoterminals (pty's). 7 387-emulation in the kernel so that programs don't need to do their own math emulation. Every computer running Linux appears to have a math coprocessor. Of course, if your computer already contains an FPU, it will be used instead of the emulation, and you can even compile your own kernel with math emulation removed, for a small memory gain. 7 support for many national or customized keyboards, and it is fairly easy to add new ones dynamically. 7 multiple virtual consoles: several independent login sessions through the console, you switch by pressing a hot-key combination (not dependent on video hardware). These are dynamically allocated; you can use up to 64. 7 Supports several common filesystems, including minix, Xenix, and all the common system V filesystems, and has an advanced filesystem of its own, which offers filesystems of up to 4 TB, and names up to 255 characters long. 7 transparent access to MS-DOS partitions (or OS/2 FAT partitions) via a special filesystem: you don't need any special commands to use the MS-DOS partition, it looks just like a normal Unix filesystem (except for funny restrictions on filenames, permissions, and so on). MS-DOS 6 compressed partitions do not work at this time without a patch (dmsdosfs). VFAT (WNT, Windows 95) support is available in Linux 2.0 7 special filesystem called UMSDOS which allows Linux to be installed on a DOS filesystem. 7 read-only HPFS-2 support for OS/2 2.1 7 HFS (Macintosh) file system support is available separately as a module. 7 CD-ROM filesystem which reads all standard formats of CD-ROMs. 7 TCP/IP networking, including ftp, telnet, NFS, etc. 7 Appletalk server 7 Netware client and server 7 Lan Manager (SMB) client and server 7 Many networking protocols: the base protocols available in the latest development kernels include TCP, IPv4, IPv6, AX.25, X.25, IPX, DDP (Appletalk), NetBEUI, Netrom, and others. Stable network protocols included in the stable kernels currently include TCP, IPv4, IPX, DDP, and AX.25. 3. Hardware Issues 3.1. Minimal configuration The following is probably the smallest possible configuration that Linux will work on: 386SX/16, 1 MB RAM, 1.44 MB or 1.2 MB floppy, any supported video card (+ keyboards, monitors, and so on of course). This should allow you to boot and test whether it works at all on the machine, but you won't be able to do anything useful. See for minimal Linux configurations In order to do something, you will want some hard disk space as well, 5 to 10 MB should suffice for a very minimal setup (with only the most important commands and perhaps one or two small applications installed, like, say, a terminal program). This is still very, very limited, and very uncomfortable, as it doesn't leave enough room to do just about anything, unless your applications are quite limited. It's generally not recommended for anything but testing if things work, and of course to be able to brag about small resource requirements. 3.2. Usable configuration If you are going to run computationally intensive programs, such as gcc, X, and TeX, you will probably want a faster processor than a 386SX/16, but even that should suffice if you are patient. In practice, you will want at least 4 MB of RAM if you don't use X, and 8 MB if you do. Also, if you want to have several users at a time, or run several large programs (compilations for example) at a time, you may want more than 4 MB of memory. It will still work with a smaller amount of memory (should work even with 2 MB), but it will use virtual memory (using the hard drive as slow memory) and that will be so slow as to be unusable. If you use many programs at once, 16 MB will reduce swapping considerably. If you don't want to swap appreciably under any normal load, 32 MB will probably suffice. Of course, if you run memory-hungry applications, you may want more. The amount of hard disk you need depends on what software you want to install. The normal basic set of Unix utilities, shells, and administrative programs should be comfortable in less than 10 MB, with a bit of room to spare for user files. For a more complete system, get Red Hat, Debian, Slackware, or another distribution, and assume that you will need 60 to 300 MB, depending on what you choose to install and what distribution you get. Add whatever space you want to reserve for user files to these totals. With today's prices on hard drives, if you are buying a new system, it makes no sense to buy a drive that is too small. Get at least 500 MB, preferably 1GB or more, and you will not regret it. Add more memory, more hard disk, a faster processor and other stuff depending on your needs, wishes and budget to go beyond the merely usable. In general, one big difference from DOS is that with Linux, adding memory makes a large difference, whereas with DOS, extra memory doesn't make that much difference. This of course has something to do with DOS's 640KB limit, which is completely nonexistent under Linux. 3.3. Supported hardware CPU: Anything that runs 386 protected mode programs (all models of 386's 486's, 586's, and 686's should work. 286s and below may someday be supported on a smaller kernel called ELKS (Embeddable Linux Kernel Subset), but don't expect the same capabilities. A version for the 680x0 CPU (for x = 2 with external MMU, 3, 4, and 6) which runs on Amigas and Ataris can be found at tsx-11.mit.edu in the 680x0 directory. Many DEC Alphas are supported. Many SPARCs are now supported. Ports are also being done to the PowerPC, ARM, and MIPS architectures. More details are available elsewhere. Architecture: ISA or EISA bus. MCA (mostly true blue PS/2's) support is incomplete but improving (see above). Local busses (VLB and PCI) work. Linux puts higher demands on hardware than DOS, Windows, and in fact most operating systems. This means that some marginal hardware that doesn't fail when running less demanding operating system may fail when running Linux. Linux is an excellent memory tester... RAM: Up to 1 GB on Intel; more on 64-bit platforms. Some people (including Linus) have noted that adding ram without adding more cache at the same time has slowed down their machine extremely, so if you add memory and find your machine slower, try adding more cache. Some machines can only cache certain amounts of memory regardless of how much RAM is installed (64 MB is the most one popular chipset can cache). Over 64 MB of memory will require a boot-time parameter, as the BIOS cannot report more than 64MB, because it is ``broken as designed.'' Data storage: Generic AT drives (EIDE, IDE, 16 bit HD controllers with MFM or RLL, or ESDI) are supported, as are SCSI hard disks and CD-ROMs, with a supported SCSI adaptor. Generic XT controllers (8 bit controllers with MFM or RLL) are also supported. Supported SCSI adaptors: Advansys, Adaptec 1542, 1522, 1740, 27xx, and 29xx (with some exceptions) series, Buslogic MultiMaster controllers (Flashpoint support is in beta-testing), NCR53c810-based controllers, DPT controllers, Qlogic ISP and FAS controllers, Seagate ST-01 and ST-02, Future Domain TMC-88x series (or any board based on the TMC950 chip) and TMC1660/1680, Ultrastor 14F, 24F and 34F, Western Digital wd7000, and others. SCSI, QIC-02, and some QIC-80 tapes are also supported. Several CD-ROM devices are also supported, including Matsushita/Panasonic, Mitsumi, Sony, Soundblaster, Toshiba, ATAPI (EIDE), SCSI, and others. For exact models, check the hardware compatibility HOWTO. Video: VGA, EGA, CGA, or Hercules (and compatibles) work in text mode. For graphics and X, there is support for (at least) normal VGA, some super-VGA cards (most of the cards based on ET3000, ET4000, Paradise, and some Trident chipsets), S3, 8514/A, ATI MACH8/32/64, and hercules. (Linux uses the Xfree86 X server, so that determines what cards are supported. A full list of supported chipsets alone takes over a page.) Networking: Ethernet support includes 3COM 503/509/579/589 (501/505/507 are supported but not recomended), AT&T GIS (nei NCR) WaveLAN, most WD8390-based cards, most WD80x3-based cards, NE1000/2000 and most clones, AC3200, Apricot 82596, AT1700, ATP, DE425/434/435/500, D-Link DE-600/620, DEPCA, DE100/101, DE200/201/202 Turbo, DE210, DE422, Cabletron E2100 (not recommended), Intel EtherExpress (not recommended), DEC EtherWORKS 3, HP LAN, HP PCLAN/plus, most AMD LANCE-based cards, NI5210, ni6510, SMC Ultra, DEC 21040 (tulip), Zenith Z-Note ethernet, All Zircom cards and all Cabletron cards other than the E2100 are unsupported, due to the manufacturers unwillingness to release programming information freely. FDDI support currently includes the DEFxx cards from DEC. Point-to-Point networking support include PPP, SLIP, CSLIP, and PLIP. Serial: Most 16450 and 16550 UART-based boards, including AST Fourport, the Usenet Serial Card II, and others. Intelligent boards supported include Cyclades Cyclom series (supported by the manufacturer), Comtrol Rocketport series (supported by the manufacturer), Stallion (most boards; supported by the manufacturer), and Digi (some boards; not manufacturer- supported). Some ISDN, frame relay, and leased line hardware is supported. Other hardware: SoundBlaster, ProAudio Spectrum 16, Gravis Ultrasound, most other sound cards, most (all?) flavours of bus mice (Microsoft, Logitech, PS/2), etc. 4. An Incomplete List of Ported Programs and Other Software Most of the common Unix tools and programs have been ported to Linux, including almost all of the GNU stuff and many X clients from various sources. Actually, ported is often too strong a word, since many programs compile out of the box without modifications, or only small modifications, because Linux tracks POSIX quite closely. Unfortunately, there are not as many end-user applications yet as we would like, but this is changing rapidly. Contact the vendor of your favorite commercial Unix application and ask if they have ported it to Linux. Here is an incomplete list of software that is known to work under Linux: Basic Unix commands: ls, tr, sed, awk and so on (you name it, Linux probably has it). Development tools: gcc, gdb, make, bison, flex, perl, rcs, cvs, prof. Languages and Environments: C, C++, Objective C, Java, Modula-3, Modula-2, Oberon, Ada95, Pascal, Fortran, ML, scheme, Tcl/tk, Perl, Python, Common Lisp, and many others. Graphical environments: X11R5 (XFree86 2.x), X11R6 (XFree86 3.x), MGR. Editors: GNU Emacs, XEmacs, MicroEmacs, jove, ez, epoch, elvis (GNU vi), vim, vile, joe, pico, jed, and others. Shells: bash (POSIX sh-compatible), zsh (includes ksh compatiblity mode), pdksh, tcsh, csh, rc, es, ash (mostly sh-compatible shell used as /bin/sh by BSD), and many more. Telecommunication: Taylor (BNU-compatible) UUCP, SLIP, CSLIP, PPP, kermit, szrz, minicom, pcomm, xcomm, term (runs multiple shells, redirects network activity, and allows remote X, all over one modem line), Seyon (popular X-windows communications program), and several fax and voice-mail (using ZyXEL and other modems) packages are available. Of course, remote serial logins are supported. News and mail: C-news, innd, trn, nn, tin, smail, elm, mh, pine, etc. Textprocessing: TeX, groff, doc, ez, LyX, Lout, Linuxdoc-SGML, and others. Games: Nethack, several Muds and X games, and lots of others. One of those games is looking through all the games available at tsx-11 and sunsite. Suites: AUIS, the Andrew User Interface System. ez is part of this suite. All of these programs (and this isn't even a hundredth of what is available) are freely available. Commercial software is becoming widely available; ask the vendor of your favorite commercial software if they support Linux. 5. Who uses Linux? Linux is freely available, and no one is required to register their copies with any central authority, so it is difficult to know how many people use Linux. Several businesses are now surviving solely on selling and supporting Linux, and very few Linux users use those businesses, relatively speaking, and the Linux newsgroups are some of the most heavily read on the internet, so the number is likely in the hundreds of thousands, but hard numbers are hard to come by. However, one brave soul, Harald T. Alvestrand, has decided to try, and asks that if you use Linux, you send a message to linux-...@uninett.no with one of the following subjects: ``I use Linux at home'', ``I use Linux at work'', or ``I use Linux at home and at work''. He is also counting votes of ``I don't use Linux'', for some reason. He posts his counts to comp.os.linux.misc. 6. Getting Linux 6.1. Anonymous FTP Matt Welsh has released a new version of his Installation and Getting Started guide, version 2.1.1. Also, the Linux Documentation Project (the LDP) has put out several other books in various states of completion, and these are available at sunsite.unc.edu:/pub/Linux/docs/LDP. Stay tuned to comp.os.linux.announce. The Linux Documentation Project home page is at At least the following anonymous ftp sites carry Linux. Textual name Numeric address Linux directory ============================= =============== =============== tsx-11.mit.edu 18.172.1.2 /pub/linux sunsite.unc.edu 152.2.22.81 /pub/Linux ftp.funet.fi 128.214.248.6 /pub/OS/Linux net.tamu.edu 128.194.177.1 /pub/linux ftp.mcc.ac.uk 130.88.203.12 /pub/linux src.doc.ic.ac.uk 146.169.2.1 /packages/linux fgb1.fgb.mw.tu-muenchen.de 129.187.200.1 /pub/linux ftp.informatik.tu-muenchen.de 131.159.0.110 /pub/comp/os/linux ftp.dfv.rwth-aachen.de 137.226.4.111 /pub/linux ftp.informatik.rwth-aachen.de 137.226.225.3 /pub/Linux ftp.Germany.EU.net 192.76.144.75 /pub/os/Linux ftp.ibp.fr 132.227.60.2 /pub/linux ftp.uu.net 137.39.1.9 /systems/unix/linux wuarchive.wustl.edu 128.252.135.4 mirrors/linux ftp.win.tue.nl 131.155.70.100 /pub/linux ftp.stack.urc.tue.nl 131.155.2.71 /pub/linux srawgw.sra.co.jp 133.137.4.3 /pub/os/linux cair.kaist.ac.kr /pub/Linux ftp.denet.dk 129.142.6.74 /pub/OS/linux NCTUCCCA.edu.tw 140.111.1.10 /Operating-Systems/Linux nic.switch.ch 130.59.1.40 /mirror/linux cnuce_arch.cnr.it 131.114.1.10 /pub/Linux ftp.monash.edu.au 130.194.11.8 /pub/linux ftp.dstc.edu.au 130.102.181.31 /pub/linux ftp.sydutech.usyd.edu.au 129.78.192.2 /pub/linux tsx-11.mit.edu and fgb1.fgb.mw.tu-muenchen.de are the official sites for Linux' GCC. Some sites mirror other sites. Please use the site closest (network-wise) to you whenever possible. At least sunsite.unc.edu and ftp.informatik.tu-muenchen.de offer ftpmail services. Mail ftp...@sunsite.unc.edu or f...@informatik.tu- muenchen.de for help. If you are lost, try looking at sunsite.unc.edu:/pub/Linux/distributions/, where several distributions are offered. Red Hat Linux, Debian, and Slackware appear to be the most popular distributions at the moment. 6.2. CDROM Most people now install Linux from CDROM's. The distributions have grown to hundreds of MBs of Linux software, and downloading that over even a 28.8 modem takes a long time. There are essentially two ways to purchase a Linux distribution on CDROM: as part of an archive of FTP sites, or directly from the manufacturer. If you purchase an archive, you will almost always get several different distributions to choose from, but usually support is not included. When you purchase a distribution directly from the vendor, you usually only get one distribution, but you usually get some form of support, usually installation support. 6.3. Other methods of obtaining Linux There are many BBS's that have Linux files. A list of them is occasionally posted to comp.os.linux.announce. Ask friends and user groups, or order one of the commmercial distributions. A list of these is contained in the Linux distribution HOWTO, available as sunsite.unc.edu:/pub/Linux/docs/HOWTO/distribution-HOWTO, and posted regularily to the comp.os.linux.announce newsgroup. 7. Getting started As mentioned at the beginning, Linux is not centrally administered. Because of this, there is no ``official'' release that one could point at, and say ``That's Linux.'' Instead, there are various ``distributions,'' which are more or less complete collections of software configured and packaged so that they can be used to install a Linux system. The first thing you should do is to get and read the list of Frequently Asked Questions (FAQ) from one of the FTP sites, or by using the normal Usenet FAQ archives (e.g. rtfm.mit.edu). This document has plenty of instructions on what to do to get started, what files you need, and how to solve most of the common problems (during installation or otherwise). 8. Legal Status of Linux Although Linux is supplied with the complete source code, it is copyrighted software, not public domain. However, it is available for free under the GNU General Public License, sometimes referred to as the ``copyleft''. See the GPL for more information. The programs that run under Linux each have their own copyright, although many of them use the GPL as well. X uses the MIT X copyright, and some utilities are under the BSD copyright. In any case, all of the software on the FTP site is freely distributable (or else it shouldn't be there). 9. News About Linux A monthly magazine, called Linux Journal, was launched over two years ago. It includes articles intended for almost all skill levels, and is intended to be helpful to all Linux users. One-year subscriptions are $22 in the U.S., $27 in Canada and Mexico, and $32 elsewhere, payable in US currency. Subscription inquiries can be sent via email to su...@ssc.com, or faxed to +1-206-782-7191, or phoned to +1-206-782-7733, or mailed to Linux Journal, PO Box 85867, Seattle, WA 98145-1867 USA. SSC has a PGP public key available for encrypting your mail to protect your credit card number; finger in...@ssc.com to get the key. There are several Usenet newsgroups for Linux discussion, and also several mailing lists. See the Linux FAQ for more information about the mailing lists (you should be able to find the FAQ either in the newsgroup or on the FTP sites). The newsgroup comp.os.linux.announce is a moderated newsgroup for announcements about Linux (new programs, bug fixes, etc). The newsgroup comp.os.linux.answers is a moderated newsgroup to which the Linux FAQ, HOWTO documents, and other documentation postings are made. The newsgroup comp.os.linux.admin is an unmoderated newsgroup for discussion of administration of Linux systems. The newsgroup comp.os.linux.development.system is an unmoderated newsgroup specifically for discussion of Linux kernel development. The only application development questions that should be discussed here are those that are intimately associated with the kernel. All other development questions are probably generic Unix development questions and should be directed to a comp.unix group instead, unless they are very Linux-specific applications questions, in which case they should be directed at comp.os.linux.development.apps. The newsgroup comp.os.linux.development.apps is an unmoderated newsgroup specifically for discussion of Linux-related applications development. It is not for discussion of where to get applications for Linux, nor a discussion forum for those who would like to see applications for Linux. The newsgroup comp.os.linux.hardware is for Linux-specific hardware questions. The newsgroup comp.os.linux.networking is for Linux-specific networking development and setup questions. The newsgroup comp.os.linux.x is for Linux-specific X Windows questions. The newsgroup comp.os.linux.misc is the replacement for comp.os.linux, and is meant for any discussion that doesn't belong elsewhere. In general, do not crosspost between the Linux newsgroups. The only crossposting that is appropriate is an occasional posting between one unmoderated group and comp.os.linux.announce. The whole point of splitting comp.os.linux into many groups is to reduce traffic in each. Those that do not follow this rule will be flamed without mercy... Linux is on the web at the URL 10. The Future After Linux 1.0 was released, work was done on several enhancements. Linux 1.2 included disk access speedups, TTY improvements, virtual memory enhancements, multiple platform support, quotas, and more. Linux 2.0, the current stable version, has even more enhancements, including many performance improvements, several new networking protocols, one of the fastest TCP/IP implementations in the world, and far, far more. Even higher performance, more networking protocols, and more device drivers will be available in Linux 2.2. Even with over 3/4 million lines of code in the kernel, there is plenty of code left to write, and even more documentation. Please join the linu...@vger.rutgers.edu mailing list if you would like to contribute to the documentation. Send mail to majo...@vger.rutgers.edu with a single line containing the word ``help'' in the body (NOT the subject) of the message. 11. This document This document is maintained by Michael K. Johnson, john...@redhat.com. Please mail me with any comments, no matter how small. I can't do a good job of maintaining this document without your help. A more-or-less current copy of this document can always be found at 12. Legalese Trademarks are owned by their owners. There is no warranty about the information in this document. Use and distribute at your own risk. 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