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- Subject: Linux Frequently Asked Questions with Answers (Part 1 of 6)
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-
- Linux Frequently Asked Questions with Answers
-
-
- This is the list of Frequently Asked Questions for Linux, the free
- operating system kernel that runs on many modern computer systems. The
- kernel source code documentation says that Linux "aims for POSIX
- compliance." Linux uses mostly free, GNU system utilities and
- application software, although commercial programs are available also.
- Originally written for 386/486/586 Intel/ISA bus machines, Linux
- versions exist for nearly every hardware platform in existence that is
- capable of running it. (Please refer to the question, "What Is Linux?"
- below.) This FAQ is meant to be read in conjunction with the Linux
- Documentation Project's HOWTO series. ("Where Are the Linux FTP
- Archives?" and, "Where Is the Documentation?") The INFO-SHEET and
- META-FAQ also list sources of Linux information. Please read them,
- and, "If this Document Still Hasn't Answered Your Question...." before
- posting to a Usenet news group. You can also get Postscript, PDF,
- HTML, and SGML versions of this document. ("Formats in Which This FAQ
- Is Available.") Linux Frequently Asked Questions with Answers is
- distributed under the terms of the GNU Free Documentation License.
- Refer to "Disclaimer and Copyright.."
-
- 1. Introduction and General Information
-
- 1.1. What Is Linux?
- 1.2. How to Get Started.
- 1.3. What Software does Linux Support?
- 1.4. How to Find a Particular Application.
- 1.5. What Hardware Is Supported?
- 1.6. Ports to Other Processors.
- 1.7. Disk Space Requirements: Minimal, Server, and Workstation.
- 1.8. Minimum and Maximum Memory Requirements.
- 1.9. Does Linux Support Universal System Bus Devices?
- 1.10. What Is Linux's Open-Source License?
- 1.11. Is Linux *nix?
-
- 2. Network Sources and Resources
-
- 2.1. Where Is the Latest Kernel Version on the Internet?
- 2.2. Where Is the Documentation?
- 2.3. Where Is the Linux Stuff on the World Wide Web?
- 2.4. What News Groups Are There for Linux?
- 2.5. What Other FAQ's and Documentation Are There for Linux?
- 2.6. Where Are the Linux FTP Archives?
- 2.7. How To Get Linux without FTP Access.
- 2.8. How To Get Information without Usenet Access.
- 2.9. What Mailing Lists Are There?
- 2.10. Where Are Linux Legal Issues Discussed?
- 2.11. Sources of Information for Unmaintained Free Software
- Projects.
-
- 2.12. Are the News Groups Archived Anywhere?
- 2.13. Where To Find Information About Security Related Issues.
- 2.14. Where To Find Linux System Specifications.
-
- 3. Compatibility with Other Operating Systems
-
- 3.1. Can Linux Use the Same Hard Drive as MS-DOS? OS/2? 386BSD?
- Win95?
-
- 3.2. How To Access Files on a MS-DOS Partition or Floppy.
- 3.3. Does Linux Support Compressed Ext2 File Systems?
- 3.4. Can Linux Use Stacked/DBLSPC/Etc. DOS Drives?
- 3.5. Can Linux Access OS/2 HPFS Partitions?
- 3.6. Can Linux Access Amiga File Systems?
- 3.7. Can Linux Access BSD, SysV, Etc. UFS?
- 3.8. Can Linux Access SMB File Systems?
- 3.9. Can Linux Access Macintosh File Systems?
- 3.10. Can Linux Run Microsoft Windows Programs?
- 3.11. Where Is Information about NFS Compatibility?
- 3.12. Can Linux Use True Type Fonts?
- 3.13. Can Linux Boot from MS-DOS?
- 3.14. How Can Linux Boot from OS/2's Boot Manager?
-
- 4. File Systems, Disks, and Drives
-
- 4.1. How To Get Linux to Work with a Disk.
- 4.2. How To Undelete Files.
- 4.3. How To Make Backups.
- 4.4. How To Resize a Partition (Non-Destructively).
- 4.5. Is There a Defragmenter for Ext2fs?
- 4.6. How To Create a File System on a Floppy.
- 4.7. Does Linux Support Virtualized File Systems Like RAID?
- 4.8. Does Linux Support File System Encryption?
- 4.9. Linux Prints Nasty Messages about Inodes, Blocks, and the
- Like.
-
- 4.10. The Swap Area Isn't Working.
- 4.11. How To Add Temporary Swap Space.
- 4.12. How To Remove LILO So the System Boots DOS Again?
- 4.13. Why Does fdformat Require Superuser Privileges?
- 4.14. The System Checks the Ext2fs Partitions Each Reboot.
- 4.15. Root File System Is Read-Only.
- 4.16. What Is /proc/kcore?
- 4.17. The AHA1542C Doesn't Work with Linux.
- 4.18. Where Is the Journalling File System on the Net?
-
- 5. Porting, Compiling and Obtaining Programs
-
- 5.1. How To Compile Programs.
- 5.2. How To Install GNU Software.
- 5.3. Where To Get Java.
- 5.4. How To Port XXX to Linux.
- 5.5. What Is ld.so and How To Get It?
- 5.6. How To Upgrade the Libraries without Trashing the System.
- 5.7. How To Use Code or a Compiler Compiled for a 486 on a 386.
- 5.8. What Does "gcc -O6" Do?
- 5.9. Where Are linux/*.h and asm/*.h?
- 5.10. What To Do about Errors Trying to Compile the Kernel.
- 5.11. How To Make a Shared Library.
- 5.12. Programs Are Very Large.
- 5.13. Does Linux Support Threads or Lightweight Processes?
- 5.14. Where To Find lint for Linux.
- 5.15. Where To Find Kermit for Linux.
- 5.16. How To Use Linux with a Cable Modem.
- 5.17. Is There an ICQ Program That Runs under Linux?
-
- 6. Solutions to Common Miscellaneous Problems
-
- 6.1. FTP Transfers Seem to Hang.
- 6.2. Free Dumps Core.
- 6.3. Netscape Crashes Frequently.
- 6.4. FTP or Telnet Server Won't Allow Logins.
- 6.5. How To Keep Track of Bookmarks in Netscape?
- 6.6. The Computer Has the Wrong Time.
- 6.7. Setuid Scripts Don't Seem to Work.
- 6.8. Free Memory as Reported by free Keeps Shrinking.
- 6.9. When Adding More Memory, the System Slows to a Crawl.
- 6.10. Some Programs (E.g. xdm) Won't Allow Logins.
- 6.11. Some Programs Allow Logins with No Password.
- 6.12. The Machine Runs Very Slowly with GCC / X / ...
- 6.13. System Only Allows Root Logins.
- 6.14. The Screen Is All Full of Weird Characters Instead of
- Letters.
-
- 6.15. I Screwed Up the System and Can't Log In to Fix It.
- 6.16. I Forgot the root Password.
- 6.17. There's a Huge Security Hole in rm!
- 6.18. lpr and/or lpd Don't Work.
- 6.19. Timestamps on Files on MS-DOS Partitions Are Set
- Incorrectly
-
- 6.20. How To Get LILO to Boot the Kernel Image.
- 6.21. How To Make Sure the System Boots after Re-Installing the
- Operating System.
-
- 6.22. The PCMCIA Card Doesn't Work after Upgrading the Kernel.
- 6.23. How To Remove (or Change) the Colors in the ls Display.
- 6.24. Why Won't a Program Work in the Current Directory?
-
- 7. How To Do This or Find Out That...
-
- 7.1. How To Find Out If a Notebook Runs Linux.
- 7.2. Installing Linux Using FTP.
- 7.3. Resuming an Interrupted Download.
- 7.4. Boot-Time Configuration.
- 7.5. Formatting Man Pages without man or groff.
- 7.6. How To Scroll Backwards in Text Mode.
- 7.7. How To Get Email to Work.
- 7.8. Sendmail Pauses for Up to a Minute at Each Command.
- 7.9. How To Enable and Select Virtual Consoles.
- 7.10. How To Set the Time Zone.
- 7.11. Dial-up PPP Configuration.
- 7.12. What Version of Linux and What Machine Name Is This?
- 7.13. What Is a "core" File?
- 7.14. How To Enable or Disable Core Dumps.
- 7.15. How To Upgrade/Recompile a Kernel.
- 7.16. Can Linux Use More than 3 Serial Ports by Sharing
- Interrupts?
-
- 7.17. Configuring Emacs's Default Settings.
- 7.18. How To Make a Rescue Floppy.
- 7.19. How To Remap a Keyboard to UK, French, Etc.?
- 7.20. How To Get NUM LOCK to Default to On.
- 7.21. How To Set (Or Reset) Initial Terminal Colors.
- 7.22. How To Have More Than 128Mb of Swap.
- How To Prevent Errors when Linking Programs with Math Functions.
-
- 8. Miscellaneous Information and Questions Answered
-
- 8.1. How To Program XYZ Under Linux.
- 8.2. What's All This about ELF? glibc?
- 8.3. How To Determine What Packages Are Installed on a System.
- 8.4. What Is a .gz File? And a .tgz? And .bz2? And... ?
- 8.5. What Does VFS Stand For?
- 8.6. What is a BogoMip?
- 8.7. What Online/Free Periodicals Exist for Linux?
- 8.8. How Many People Use Linux?
- 8.9. How Many People Use Linux? (Redux.)
- 8.10. What Is the Best (Distribution|SCSI Card|Editor|CD-ROM
- Drive|....)
-
- 8.11. How Does One Pronounce Linux?
-
- 9. Frequently Encountered Error Messages
-
- 9.1. Modprobe Can't Locate Module, XXX, and Similar Messages.
- 9.2. Unknown Terminal Type "linux" and Similar.
- 9.3. INET: Warning: old style ioctl... called!
- 9.4. ld: unrecognized option '-m486'
- 9.5. GCC Says, "Internal compiler error."
- 9.6. Make Says, "Error 139."
- 9.7. Shell-Init: Permission Denied when I Log In.
- 9.8. No Utmp Entry. You Must Exec ... when Logging In.
- 9.9. Warning--bdflush Not Running.
- 9.10. Warning: obsolete routing request made.
- 9.11. EXT2-fs: warning: mounting unchecked file system.
- 9.12. EXT2-fs warning: maximal count reached.
- 9.13. EXT2-fs warning: checktime reached.
- 9.14. df Says, "Cannot read table of mounted file systems."
- 9.15. fdisk Says, "Partition X has different physical/logical..."
- 9.16. fdisk: Partition 1 does not start on cylinder boundary.
- 9.17. fdisk Says Partition n Has an Odd Number of Sectors.
- 9.18. Mtools Utilities Say They Cannot Initialize Drive X.
- 9.19. At the Start of Booting: Memory tight
- 9.20. The System Log Says, "end_request: I/O error, ...."
- 9.21. "You don't exist. Go away."
- 9.22. "Operation not permitted."
- 9.23. programname: error in loading shared libraries: lib
- xxx..so. x: cannot open shared object file: No such file
- or directory.
-
- 9.24. "init: Id "x" respawning too fast: disabled for 5 minutes."
- 9.25. FTP server says: "421 service not available, remote server
- has closed connection."
-
- 10. The X Window System
-
- 10.1. Does Linux Support X?
- 10.2. How To Get the X Window System to Work.
- 10.3. Where To Find a Ready-Made XF86Config file.
- 10.4. What Desktop Environments Run on Linux?
- 10.5. xterm Logins Show Up Strangely in who, finger.
- 10.6. How to Start a X Client on Another Display.
-
- 11. How to Get Further Assistance
-
- 11.1. If this Document Still Hasn't Answered Your Question....
- 11.2. What to Put in a Request for Help.
- 11.3. How To Email Someone about Your Problem.
-
- 12. Acknowledgments and Administrivia
-
- 12.1. Where To Send Comments.
- 12.2. Formats in Which This FAQ Is Available.
- 12.3. Authorship and Acknowledgments.
- 12.4. Disclaimer and Copyright.
-
- 1. Introduction and General Information
-
- 1.1. What Is Linux?
-
- Linux is the kernel of operating systems that look like and perform as
- well or better than the famous operating system from AT&T Bell Labs.
- Linus Torvalds and a loosely knit team of volunteer hackers from
- across the Internet wrote (and still are writing) Linux from scratch.
- It has all of the features of a modern, fully fledged operating
- system: true multitasking, threads, virtual memory, shared libraries,
- demand loading, shared, copy-on-write executables, proper memory
- management, loadable device driver modules, video frame buffering, and
- TCP/IP networking.
-
- Most people, however, refer to the operating system kernel, system
- software, and application software, collectively, as "Linux," and that
- convention is used in this FAQ as well.
-
- Linux was written originally for 386/486/586-based PC's, using the
- hardware facilities of the 80386 processor family to implement its
- features. There are now many ports to other hardware platforms.
- ("Ports to Other Processors.")
-
- There are also Linux distributions specifically for mobile and
- handheld platforms. An API specification and developers kit for the
- Crusoe Smart Microprocessor developed by Transmeta Corporation are at
- http://www.transmeta.com/. Information on the Linux distribution for
- the Compaq iPAQ is at http://www.handhelds.org/
-
- Refer also to the Linux INFO-SHEET for more details as well as the
- answers to "Where Is the Documentation?", "What Hardware Is
- Supported?", and "Ports to Other Processors.", below. A list updated
- weekly is at: http://lwn.net/ Archive of many of the distributions are
- on line at: ftp://ftp.tux.org/ and http://planetmirror.com/pub/linux.
-
- The Linux kernel is distributed under the GNU General Public License.
- ("What Is Linux's Open-Source License?")
-
- There is a historical archive of all versions of the Linux kernel at
- http://ps.cus.umist.ac.uk/~rhw/kernel.versions.html.
-
- 1.2. How to Get Started.
-
- There are a handful of major Linux distributions. For information
- about them, and how they are installed, see Matthew Welsh's
- Installation and Getting Started, or IGS for short. It's located at
- the Linux Documentation Project Home Page, http://www.linuxdoc.org/,
- and on the Linux FAQ home page, http://www.mainmatter.com/
-
- The information in IGS is somewhat dated now. More up-to-date
- information about first-time Linux installation is located in the
- LDP's Installation HOWTO, also located at the LDP Home Page.
-
- Postings on the Usenet News groups, including the FAQ, are archived on
- http://groups.google.com/. Search for "comp.os.linux.*,"
- "alt.uu.comp.os.linux.*, or whatever is appropriate, to retrieve
- articles from the Linux News groups. ("What News Groups Are There for
- Linux?")
-
- Commercial distributions are available from book and electronics
- stores. Some hardware vendors now ship systems with Linux
- pre-installed.
-
- There is a very thorough installation guide on line at
- http://heather.cs.ucdavis.edu/~matloff/linux.html.
-
- Some distributions can still be installed via anonymous FTP from
- various Linux archive sites, but in many cases, the size of the
- distribution makes this impractical. ("Where Are the Linux FTP
- Archives?") There are also a large number of releases which are
- distributed less globally that suit special local and national needs.
- Many of them are archived at ftp://ftp.tux.org/
-
- 1.3. What Software does Linux Support?
-
- All of the standard open source utilities, like GCC, (X)Emacs, the X
- Window System, all the standard Unix utilities, TCP/IP (including SLIP
- and PPP), and all of the hundreds of programs that people have
- compiled or ported to it.
-
- There is a DOS emulator, called DOSEMU. The latest stable release is
- 0.98.3. The FTP archives are at ftp://ftp.dosemu.org/dosemu The Web
- site is http://www.dosemu.org.
-
- The emulator can run DOS itself and some (but not all) DOS
- applications. Be sure to look at the README file to determine which
- version you should get. Also, see the DOSEMU-HOWTO (slightly dated at
- this point--it doesn't cover the most recent version of the program),
- at ftp://metalab.unc.edu/pub/Linux/docs/HOWTO.
-
- Work has been progressing on an emulator for Microsoft Windows
- binaries. ("Can Linux Run Microsoft Windows Programs?")
-
- iBCS2 (Intel Binary Compatibility Standard) emulator code for SVR4 ELF
- and SVR3.2 COFF binaries can be included in the kernel as a
- compile-time option. There is information at
- ftp://tsx-11.mit.edu/pub/linux/BETA/ibcs2/README.
-
- For more information see the INFO-SHEET, which is one of the HOWTO's
- ("Where Is the Documentation?" and "How To Port XXX to Linux.")
-
- Some companies have commercial software available. They often announce
- their availability on comp.os.linux.announce-- try searching the
- archives. ("Are the News Groups Archived Anywhere?")
-
- 1.4. How to Find a Particular Application.
-
- Look first in the Linux Software Map. It's at:
- ftp://ibiblio.org/pub/Linux/docs/linux-software-map/, and on the other
- FTP sites. A search engine is available on the World Wide Web at
- http://www.boutell.com/lsm/.
-
- Also check out the Freshmeat Web site: http://www.freshmeat.net, which
- is where many new announcements of free software first appear.
- Freshmeat is basically a site index that continuously updates the
- notices of new or upgraded software for Linux, and maintains indexes
- of the announcements and links to their URL's.
-
- The FTP sites ("Where Are the Linux FTP Archives?") often have ls-lR
- or INDEX directory listings which you can search using grep or a text
- editor. The directory listings files can be very large, however,
- making them unwieldy for quick searches.
-
- Also look at the Linux Projects Map:
- ftp://ftp.ix.de/pub/ix/Linux/docs/Projects-Map.gz.
-
- There's a search engine for Linux FTP archives at:
- http://lfw.linuxhq.com/.
-
- Searching for "Linux" on the World Wide Web provides copious
- references. ("Where Is the Linux Stuff on the World Wide Web?")
-
- If you don't find anything, you could download the sources to the
- program yourself and compile them. See (See: "How To Port XXX to
- Linux.") If it's a large package that may require some porting, post a
- message to comp.os.linux.development.apps.
-
- If you compile a large-ish program, please upload it to one or more of
- the FTP sites, and post a message to comp.os.linux.announce (submit
- your posting to linux-announce@news.ornl.gov).
-
- If you're looking for an application program, the chances are that
- someone has already written a free version. The comp.sources.wanted
- FAQ has instructions for finding the source code.
-
- 1.5. What Hardware Is Supported?
-
- A minimal Linux installation requires a machine for which a port
- exists, at least 2Mb of RAM, and a single floppy drive. But to do
- anything even remotely useful, more RAM and disk space are needed.
- Refer to: "Ports to Other Processors.", "Disk Space Requirements:
- Minimal, Server, and Workstation.", and "Minimum and Maximum Memory
- Requirements."
-
- Intel CPU, PC-compatible machines require at least an 80386 processor
- to run the standard Linux kernel.
-
- Linux, including the X Window System GUI, runs on most current
- laptops. Refer to the answer for: "How To Find Out If a Notebook Runs
- Linux." There are numerous sources of information about specific PC's,
- video cards, disk controllers, and other hardware. Refer to the
- INFO-SHEET, Laptop HOWTO, and the Hardware HOWTO. ("Where Is the
- Documentation?")
-
- 1.6. Ports to Other Processors.
-
- The Web site, Overview of Linux Ports:
- http://www.itp.uni-hannover.de/~kreutzm/de/lin_plattforms.html
- provides a listing of known ports.
-
- Another site with a list of ports is:
- http://lodda.igo.uni-hannover.de/ports/linux_ports.html
-
- In addition, the following information is available about specific
- ports:
-
- On Intel platforms, VESA Local Bus and PCI bus are supported.
-
- MCA (IBM's proprietary bus) and ESDI hard drives are mostly supported.
- There is further information on the MCA bus and what cards Linux
- supports on the Micro Channel Linux Web page,
- http://www.dgmicro.com/mca. Refer also to the answer for: "Where Is
- the Linux Stuff on the World Wide Web?"
-
- There is a port of Linux to the 8086, known as the Embeddable Linux
- Kernel Subset (ELKS). This is a 16-bit subset of the Linux kernel
- which will mainly be used for embedded systems, at:
- http://www.linux.org.uk/Linux8086.html. Standard Linux does not run
- 8086 or 80286 processors, because it requires task-switching and
- memory management facilities found on 80386 and later processors.
-
- Linux supports multiprocessing with Intel MP architecture. See the
- file Documentation/smp.tex in the Linux kernel source code
- distribution.
-
- A project has been underway for a while to port Linux to suitable
- 68000-series based systems like Amigas and Ataris. The Linux/m68K FAQ
- is located at http://www.clark.net/pub/lawrencc/linux/faq/faq.html.
- The URL of the Linux/m68k home page is
- http://www.linux-m68k.org/faq/faq.html.
-
- There is a m68k port for the Amiga by Jes Sorensen, which is located
- at ftp://sunsite.auc.dk/pub/os/linux/680x0/redhat/. The installation
- FAQ for the package, by Ron Flory, is at
- http://www.feist.com/~rjflory/linux/rh/.
-
- There is also a linux-680x0 mailing list. ("What Mailing Lists Are
- There?")
-
- There is (or was) a FTP site for the Linux-m68k project on
- ftp.phil.uni-sb.de/pub/atari/linux-68k, but this address may no longer
- be current.
-
- Debian GNU/Linux is being ported to Alpha, Sparc, PowerPC, and ARM
- platforms. There are mailing lists for all of them. See
- http://www.debian.org/MailingLists/subscribe
-
- One of the Linux-PPC project pages has moved recently. Its location is
- http://www.debian.org/MailingLists/subscribe. http://www.linuxppc.org,
- and the archive site is ftp://ftp.linuxppc.org/linuxppc.
-
- There is a Linux-PPC support page at http://www.cs.nmt.edu/~linuxppc/.
- There you will find the kernel that is distributed with Linux.
-
- There are two sites for the Linux iMac port:
- http://w3.one.net/~johnb/imaclinux, and
- http://www.imaclinux.net:8080/content/index.html.
-
- A port to the 64-bit DEC Alpha/AXP is at
- http://www.azstarnet.com/~axplinux/. There is a mailing list at
- vger.redhat.com: ("What Mailing Lists Are There?")
-
- Ralf Baechle is working on a port to the MIPS, initially for the R4600
- on Deskstation Tyne machines. The Linux-MIPS FTP sites are
- ftp://ftp.fnet.fr/linux-mips and
- ftp://ftp.linux.sgi.com/pub/mips-linux. Interested people may mail
- their questions and offers of assistance to linux@waldorf-gmbh.de.
-
- There is (or was) also a MIPS channel on the Linux Activists mail
- server and a linux-mips mailing list. ("What Mailing Lists Are
- There?")
-
- There are currently two ports of Linux to the ARM family of
- processors. One of these is for the ARM3, fitted to the Acorn A5000,
- and it includes I/O drivers for the 82710/11 as appropriate. The other
- is to the ARM610 of the Acorn RISC PC. The RISC PC port is currently
- in its early to middle stages, owing to the need to rewrite much of
- the memory handling. The A5000 port is in restricted beta testing. A
- release is likely soon.
-
- For more, up-to-date information, read the newsgroup
- comp.sys.acorn.misc. There is a FAQ at http://www.arm.uk.linux.org.
-
- The Linux SPARC project is a hotbed of activity. There is a FAQ and
- plenty of other information available from the UltraLinux page,
- http://www.ultralinux.org/.
-
- The Home Page of the UltraSPARC port ("UltraPenguin") is located at
- http://sunsite.mff.cuni.cz/linux/ultrapenguin-1.0/, although the URL
- may not be current.
-
- There is also a port to SGI/Indy machines ("Hardhat"). The URL is
- http://www.linux.sgi.com/.
-
- 1.7. Disk Space Requirements: Minimal, Server, and Workstation.
-
- About 10Mb for a very minimal installation, suitable for trying Linux,
- and not much else.
-
- You can fit a typical server installation, including the X Window
- Systemt GUI, into 80Mb. Installing Debian GNU/Linux takes 500Mb-1GB,
- including kernel source code, some space for user files, and spool
- areas.
-
- Installing a commercial distribution that has a desktop GUI
- environment, commercial word processor, and front-office productivity
- suite, will claim 1-1.5 GB of disk space, approximately.
-
- 1.8. Minimum and Maximum Memory Requirements.
-
- At least 4MB, and then you will need to use special installation
- procedures until the disk swap space is installed. Linux will run
- comfortably in 4MB of RAM, although running GUI apps is impractically
- slow because they need to swap out to disk.
-
- Some applications, like StarOffice, require 32 MB of physical memory,
- and compiling C++ code can easily consume over 100 MB of combined
- physical and virtual memory.
-
- There is a distribution, "Small Linux," that will run on machines with
- 2MB of RAM. Refer to the answer to: "Where Are the Linux FTP
- Archives?"
-
- A number of people have asked how to address more than 64 MB of
- memory, which is the default upper limit in most standard kernels.
- Either type, at the BOOT lilo: prompt:
-
- mem=XXM
-
- Or place the following in your /etc/lilo.conf file:
-
- append="mem=XXM"
-
- The parameter "XXM" is the amount of memory, specified as megabytes;
- for example, "128M."
-
- If an "append=" directive with other configuration options already
- exists in /etc/lilo.conf, then add the mem= directive to the end of
- the existing argument, and separated from the previous arguments by a
- space; e.g.:
-
- # Example only; do not use.
- append="parport=0x3bc,none serial=0x3f8,4 mem=XXM"
-
- Be sure to run the "lilo" command to install the new configuration.
-
- If Linux still doesn't recognize the extra memory, the kernel may need
- additional configuration. Refer to the
- /usr/src/linux/Documentation/memory.txt file in the kernel source as a
- start.
-
- For further information about LILO, refer to the manual pages for lilo
- and lilo.conf, the documentation in /usr/doc/lilo, and the answer for:
- "Boot-Time Configuration.", below.
-
- 1.9. Does Linux Support Universal System Bus Devices?
-
- Linux supports a few dozen USB devices at present, and work is
- underway to develop additional device drivers. There is a Web page
- devoted to the subject, at http://www.linux-usb.org/. There is also
- LDP documentation, at: ("Where Is the Linux Stuff on the World Wide
- Web?")
-
- 1.10. What Is Linux's Open-Source License?
-
- The Linux trademark belongs to Linus Torvalds. He has placed the Linux
- kernel under the GNU General Public License, which basically means
- that you may freely copy, change, and distribute it, but you may not
- impose any restrictions on further distribution, and you must make the
- source code available.
-
- There is a FAQ for the GPL at:
- http://www.gnu.org/copyleft/gnu-faq.html.
-
- This is not the same as Public Domain. See the Copyright FAQ,
- ftp://rtfm.mit.edu/pub/usenet/news.answers/law/copyright, for details.
-
- Full details are in the file COPYING in the Linux kernel sources
- (probably in /usr/src/linux on your system).
-
- The licenses of the utilities and programs which come with the
- installations vary. Much of the code is from the GNU Project at the
- Free Software Foundation, and is also under the GPL.
-
- Note that discussion about the merits or otherwise of the GPL should
- be posted to the news group gnu.misc.discuss, and not to the
- comp.os.linux hierarchy.
-
- For legal questions, refer to the answer: ("Where Are Linux Legal
- Issues Discussed?")
-
- 1.11. Is Linux *nix?
-
- Not officially, until it passes the Open Group's certification tests,
- and supports the necessary API's. Even very few of the commercial
- operating systems have passed the Open Group tests. For more
- information, see http://www.unix-systems.org/what_is_unix.html.
-
- [Bob Friesenhahn]
-
- 2. Network Sources and Resources
-
- 2.1. Where Is the Latest Kernel Version on the Internet?
-
- Make that versions. The 2.0 series kernels are still available for
- older machines. The latest production kernel series is 2.2.x. The
- updates to this kernel are bug fixes. The new 2.4 kernel sources are
- also on-line.
-
- The Web page at http://www.kernel.org/ lists the current versions of
- the development and production kernels.
-
- If you want to download the source code, FTP to ftp.xx.kernel.org,
- where "xx" is the two-letter Internet domain abbreviation of your
- country; e.g., "us" for United States, "ca" for Canada, or "de" for
- Germany. Kernel versions 2.2.x are archived in the directory
- pub/linux/kernel/v2.2, as are patches for the prerelease versions. The
- kernel source code is archived as a .tar.gz file, and as a .tar.bz2
- file.
-
- Follow the instructions in any of the standard references to compile
- the kernel, as you would with any other custom kernel. The
- Documentation subdirectory contains information by the authors of
- various subsystems and drivers, and much of that information is not
- documented elsewhere.
-
- If you want to participate in kernel development, make sure that you
- sign on to the linux-kernel mailing list to find out what people are
- working on. Refer to the answer: "What Mailing Lists Are There?"
-
- There is a story about the features of the 2.4 series kernels at
- http://features.linuxtoday.com/stories/8191.html.
-
- 2.2. Where Is the Documentation?
-
- Look in the following places, and the sites that mirror them.
-
- * http://www.linuxdoc.org/
- * ftp://ftp.funet.fi/pub/OS/Linux/doc/HOWTO/
- * ftp://tsx-11.mit.edu/pub/linux/docs/HOWTO/
- * ftp://metalab.unc.edu/pub/Linux/docs/HOWTO/
-
- For a list of Linux FTP sites, refer to the answer for: "Where Are the
- Linux FTP Archives?"
-
- If you don't have access to FTP, try the FTP-by-mail servers:
- ftpmail@decwrl.dec.com, ftpmail@doc.ic.ac.uk, or:
- ftp-mailer@informatik.tu-muenchen.de.
-
- A complete list of HOWTO's is available in the file HOWTO-INDEX at
- http://www.linuxdoc.org/HOWTO/HOWTO-INDEX/howtos.html. The
- mini-HOWTO's are indexed at
- http://www.linuxdoc.org/HOWTO/HOWTO-INDEX/mini.html.
-
- A search engine at the Linux FAQ Home Page,
- http://www.mainmatter.com/, allows you to search LDP HOWTO's, the
- Linux FAQ, man pages, and Network Administrator's Guide.
-
- In addition, translations are available from
- ftp://metalab.unc.edu/pub/Linux/docs/HOWTO/translations/ and mirrors
- worldwide. The HOWTO's and other documentation have been translated
- into the following languages:
-
- Chinese (Big5) (zh) Croatian (hr) French (fr)
- German (de Hellenic (el) Indonesian (id)
- Italian (it) Japanese (ja) Korean (ko)
- Polish (pl) Slovenian (sl) Spanish (es)
- Swedish (sv) Turkish (tr)
-
- Additional documents are always in preparation. Please get in touch
- with the coordinators if you are interested in writing one. Contact
- and submission information is at
- http://www.linuxdoc.org/mailinfo.html.
-
- There is also a LDP HOWTO page at http://howto.tucows.org/.
-
- The Guide Series produced by the Linux Documentation Project is
- available from http://www.linuxdoc.org/. Please read them if you are
- new to Unix and Linux.
-
- The Linux Mobile Guide is an expanded version of the
- Linux-Laptop-HOWTO. The URL is: http://home.snafu.de/wehe/howtos.html.
-
- And, of course, a number of people have written documentation
- independently of the LDP:
-
- * Linux Administrators Security Guide, by Kurt Seifried.
- http://www.freek.com/lasg/.
- * Newbie's Linux Manual. http://www.linuxdoc.org/nlm/.
- * One-Page Linux Manual. http://www.powerup.com.au/~squadron/.
- * Rute Users Tutorial and Exposition. http://rute.sourceforge.net/.
- * Short beginners' manual for Linux. Also available in Dutch.
- http://www.stuwww.kub.nl/people/b.vannunen/linux-man.php3.
- * Virtual Frame buffer HOWTO, by Alex Buell.
- http://www.tahallah.demon.co.uk/programming/prog.html.
- * X11 & TrueType Fonts, by Peter Kleiweg.
- http://www.let.rug.nl/~kleiweg/.
-
- Documentation for kernel developers is on-line:
- http://kernelbook.sourceforge.net/.
-
- To find out about Linux memory management, including performance
- tuning, see Rik van Riel's Web page at
- http://humbolt.geo.uu.nl/Linux-MM/.
-
- The Linux Consultants HOWTO has a directory of Linux consultants at
- http://www.linuxports.com/.
-
- Gary's Encyclopedia lists over 4,000 Linux related links. Its URL is
- http://members.aa.net/~swear/pedia/index.html.
-
- There is also a FAQ specifically for the Red Hat Linux distribution,
- at http://www.best.com/~aturner/RedHat-FAQ/faq_index.html.
-
- And the Home Page of this FAQ is http://www.mainmatter.com/.
-
- 2.3. Where Is the Linux Stuff on the World Wide Web?
-
- In addition to the Linux Documentation Project Home Page:
- http://www.linuxdoc.org/, there are many pages that provide beginning
- and advanced information about Linux.
-
- These two pages provide a good starting point for general Linux
- information: Linux International's Home Page, at http://www.li.org/,
- and the Linux Online's Linux Home Page at http://www.linux.org/.
-
- Both of these pages provide links to other sites, information about
- general information, distributions, new software, documentation, and
- news.
-
- Documentation for kernel developers is on-line:
- http://kernelbook.sourceforge.net/.
-
- The tutorial, Unix is a Four Letter Word..., is located at
- http://www.linuxbox.com/~taylor/4ltrwrd/. It is a general introduction
- to Unix operating systems and is not Linux specific.
-
-