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writer: Patrick Volkerding, Kevin Reichard and Eric Johnson
publisher: MIS: Press
Reviewer: Scott Wegener
times have modified in the Linux group seeing that the original kernels were first made purchasable by using Linus Torvalds. My first Linux installation consisted of downloading components of an SLS distribution at evening, each evening for a week, from a native BBS at 2400 baud, most effective to discover that most of the files have been corrupt and unusable. I then downloaded a Slackware distribution in an identical vogue, and two weeks after identifying that i wished to install Linux, I eventually had a usable install set. Now if best there turned into some documentation on installation Linux...
luckily, those days are gone perpetually. The Linux kernel and distributions have evolved at a big rate, documentation now exists, more and more utility has been ported to Linux, and abilities Linux clients now have their choice now not in simple terms between two or three distributions to installation or retrieve from the net, but have many CD packages to make a choice from as neatly.
Linux: Configuration and installing is a publication/CD kit which includes the Linux 1.2.8 kernel and the Slackware 2.3 distribution together with a bunch of alternative Linux chocolates (the CD is packed). The ebook is authored by way of Patrick Volkerding, the maintainer of the Slackware Linux distribution, along with Kevin Reichard and Eric Johnson, each veteran Unix professionals. Their event indicates during the e-book and the CD. however the CD can not examine to having the entire Sunsite archive, it has lots of constructive extras like an X-windows CD browser, a home windows bootdisk/rootdisk program, and some of the more generic Linux and X packages at the moment obtainable.
The booklet is split into four sections: “Linux installation and Configuration”, “using Linux”, “Linux Communications and Networking”, and “Linux Programming”.
the first section is a new Linux consumer's godsend. although now a fairly skilled Linux person, I bear in mind scouring the web for one of the most suggestions contained in these few chapters. Chapter 1 now not best gives a top level view of workstation hardware, however more importantly, lists which hardware is supported with the aid of the Linux 1.2.x kernel—priceless to a first time installer of Linux. I believe most of us comprehend at least one horror story about unsupported hardware; this chapter can aid make sure a new gadget will run Linux or, at a minimum, resolve why it could not.
Chapter 2 gives a extremely thorough walk-through of a “usual” Linux setting up, protecting each element of setting up as well as a number of average issues encountered in the process. sadly, each Linux installation can have its own exciting personality, so it's inconceivable to cover each problem that might maybe arise. for instance, the kernel I made a bootdisk from had a problem with the caching on my CD-ROM power; consequently, I needed to do a partial installing from my DOS tough force, then collect a 1.3 kernel as a way to finished installing off the CD.
I actually have two minor complaints concerning the stroll-through:
It assumes each user should be the use of a swap partition rather than a swapfile. Swap-info are covered, but handiest much later within the book. Most readers will locate this area only after doing an setting up the use of the Chapter 1 stroll-via as a “template.”
Loadlin is mentioned after LILO configuration has been done in the stroll-through. I even have yet to get LILO to work properly with home windows ninety five, and mentioning the existence of Loadlin before a person installs LILO may additionally save some headaches.
Chapters three and four cowl X-home windows installation and configuration and, for probably the most half, does an excellent job. These chapters consist of a top level view of the window managers, the distinct X servers obligatory for different video boards and, most importantly, provide an in-depth rationalization on configuration data and the xf86config utility. The main configuration file for X-windows, XF86Config, which is among the most daunting initiatives for a Linux Linux beginner to install (a reality the e-book with no trouble acknowledges) is defined basically line for line. A minor gripe: i used to be surprised to find no reference to the X utility vgaset. not everybody has a display screen whose specifications precisely suit up with the given monitor record; vgaset has been helpful in final display screen/X configuration.
Chapter 5 covers the Linux file gadget, Un*x/Linux instructions, and other regularly occurring Un*x and Linux themes useful for the Linux beginner. Shells, altering passwords, filename completion, and shell background are all coated to a degree that ensures a brand new Linux consumer coming from an MS-DOS or a home windows ambiance won't be misplaced. Printing is in brief covered as well, however no mention of Ghostscript or of usual printing complications is made. Ghostview and references to the Printing-HOWTO are made in a while in the ebook, however a separate consolidated section on printing should have been written or skipped altogether. The gold standard function of the chapter is in fact the elvis/vi overview; except a brand new user can locate more suitable references on editors and/or gets used to Linux editors, even just a few pages about vi can store lots of frustration.
Chapter 6 covers daily use of X-windows, wide-spread X classes and utilities, and is likely one of the most appropriate chapters in the ebook for novices and skilled clients alike. fvwm and its configuration file, .fvwmrc, are coated very smartly, with most settings totally explained as well as X supplies and a few X utilities. I simply cannot praise the chapters on X-windows sufficient (Chapters three, 4, and 6); X is likely one of the most “terrifying” things to gain knowledge of beneath Linux and any tips on it helps particularly.
Chapter 7 is one other “have to examine” for rookies and experienced Linux clients looking to additional their knowledge. many of the typical textual content processing tools are explained—Emacs, groff, TeX, texinfo/info, and sed. These sections don't seem to be exhaustive tutorials but are more than sufficient to get a person begun the usage of the tools. the man web page structure is also discussed in a bit I found to be for my part beneficial. Tar and gzip are adequately covered, and a very good section on starting device administration covers some usually misunderstood topics, including scheduling instructions(cron/at/batch), managing users and companies, the /and so forth listing and passwd file, and more. whereas the chapter might not make you an fast savvy sysadmin, it does a pretty good job of explaining some sysadmin initiatives and is a superb region to beginning.
Chapters 8 and 9 are quite valuable to these clients new to the cyber web. The chapters include a whole lot information about Linux's communique programs (Seyon and Minicom), fundamentals of TCP/IP and host names, and many of the normal slew of web courses and utilities. The fundamentals of email, telnet, FTP, and the WWW are defined in a simple to remember style; in brief, these two chapters incorporate a decent introduction to the information superhighway below Linux.
Chapter 10 is whatever that many programmers from DOS or home windows environments will recognize—a programming overview for Linux, along with an introduction to lots of the extra average programming equipment. There are without difficulty too many different equipment to have a single chapter cowl even one among them totally. Intermediate programmers can also ignore the chapter, but novices or programmers new to Linux will be grateful for it. Examples are given for Perl, gawk and Tcl, and make/imake are in brief explained, which is a pleasant however unexpected “bonus” to circular out the e-book's many themes.
The CD itself includes the entire Slackware 2.3 distribution, which includes the X window gadget (XFree3.1.1), Linux kernel 1.2.8, and the regular disk collection for Slackware. There isn't too a good deal to say concerning the latter; Slackware has been one of the most excellent Linux distributions because its inception, and it's effortless adequate to set up that most non-Linux clients can have few problems, if any. the complete set of Linux HOWTOs and FAQs are covered, each in home windows Write layout (a pleasant touch) and ASCII/Linux versions. A full set of precompiled kernels are also on the CD and descriptions in the booklet help you choose the proper kernel in your gadget.
there is a non-destructive partitioning application blanketed on the CD, known as FIPS, as well as full supply for a lot of the distribution packages. lamentably, I wasn't courageous enough to are attempting FIPS—I have 1 gig of storage between two HDs and would not like to tempt destiny. Some great programs blanketed in either binary or source:
LessTif: An alpha Motif work-alikeSamba: Utility to connect to home windows primarily based networksSlirp: SLIP emulation for shell bills(source)httpd: NCSA WWW serverlemacs: Lucid Emacs(Emacs for X)AUIS: Andrew consumer Interface equipment, a bunch of integrated appsperl-5.001: newest version of Perl programming language
general, the publication is smartly written and consists of a remarkable volume of advice, given the giant number of topics that may also be mentioned about Linux. Most of my gripes about the book are minor, and in view that the volume of assistance coated, or not it's somewhat comprehensible that now not each merchandise i wished to look become there. whereas it isn't a alternative for all of the Linux Documentation project publications, it does a very good job of placing a huge volume of Linux tips into one reference ebook and would be a welcome boost to any starting to intermediate Linux person's library. The book itself is greater than price the expense, and packaged with the CD, it be a mixture that can not go wrong.
during this guide, they boot into their Arch device that they installed in the old book. here, they configure an online connection, a few troubleshooting suggestions, and installation some application. This software will encompass a graphical person interface (GUI) offered via the X server. As with every thing else, every step could be carried out manually, by means of the terminal
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Nowadays Linux runs on almost anything. You can get a cheap PC and turn it into a media station or web server or whatever else you wish at no aditional cost. Hardware is cheap also. With the advent of the Raspberry Pi and similar small computer boards one can get a fully-functional PC for the price you'd usually pay for a sixpack of beer. In this LinuxConfig series we'll not only build a Linux computer; we'll build an entire Linux cluster with four nodes and learn how to manage it so that all the nodes respond at the same time to the same commands.Hardware Requirements:
Build a cluster out of cheap Raspberry Pi's and run Linux on itMotivation: why not?
To cover the motivation part they can answer the "why" with a simple "because they can" or "because it's fun". To take on a more practical approach, a Raspberry Pi cluster running on Linux is not only cheap to make compared to what it can do but can also be used to make one's life easier when dealing with resource-intensive tasks such as compiling, continuous data parsing from the Internet or just learning how to manage a cluster using real hardware instead of resorting to virtual machines.The Raspberry
A Raspberry Pi is a single board computer that took the hardware world by storm a few years ago. One of the latest iterations is the Raspberry Pi 3 B+, the one we'll use in this tutorial. Going for about $38 on Amazon, the Raspberry Pi 3 B+ boasts a 1.4GHz 64-bit quad-core ARMv8 CPU with 1GB of DDR2 SDRAM memory. It needs an MicroSDHC or MicroSDXC card of at least 8 GB for storage and can also make use of an external hard disk drive through extension boards you can buy separately that connect SCSI to the main board's parts, should you need more reliable and bigger storage.
The Raspberry Pi 3 B+ has one Ethernet port of 10/100Mbps Lan Speed, a built-in 4.2 Bluetooth module and a 802.11b/g/n Wireless module. The same board had 4 USB 2.0 ports, a full HDMI port, one 3.5mm audio jack that also acts as composite video. As a power source you can use the MicroUSB port to insert an 5V/2.5A DC adapter, use an USB cable connected to your computer or the built-in GPIO. It also has a CSI port for connecting a web cam and a DSI port for mounting a touchscreen display. This board uses only 5V to run, weighs 2.08 ounces and measures 3.54 inches in lenght. You can plug it in somewhere in your house just as you'd do with your smartphone when it needs charging and forget about it for months.
And it's great for making a scalable Linux cluster with limited funds.What you will need to build a cheap Linux cluster
In this how-to's first part we'll look at what you need to get in order to build your very own Raspberry Pi Linux cluster. Given the fact that the number of nodes you can use is scalable both upwards and downwards we'll be building a four node cluster out of four Raspberry Pi 3 B+ boards. One can later add two, five, eleven more nodes if needed. The more Raspberry Pi 3 B+ boards you incorporate to the cluster the more power you'll have at your fingertips.
First get four Raspberry Pi 3 B+ boards. It would be advisable to get them all at once or at least from the same seller in a short time span as to make sure they have the same build serial number, meaning they come from the same production line. This would ensure a similar experience with each board as each will behave in exactly the same way. A Raspberry Pi of the same model bought from another manufacturing time period might get just a bit hotter or run a bit slower than other boards of the same brand.
You need something to install sofware on, something that will act as a data repository for your software. MicroSD cards are cheap and you will need at least four 16GB MicroSDHC cards, one for each board. Once Linux is installed you will be left with approximately 11GB of free userspace - enough for you to experiment and deposit smaller files. Should you need larger storage you can get larger MicroSDHC or MicroSDXC cards; just make sure they're all alike - same size, same brand.
You will need four MicroSD cards, at least 16GB in size
For conectivity, given that each Raspberry Pi 3 B+ has an Ethernet port, you can buy five Cat6 Ethernet cables, at least one foot long (30cm). One for each cluster node and one to connect the entire cluster to your LAN or WAN. It's best to use different colour cables. This way you'll visually know which cable belongs to which node after you plug them in.
For power you have to use quality MicroUSB cables, nylon braided and colour-coded if possible. At times you might want to manually power down a node and then you'll need to know which power cable belongs to which level of the cluster. Different colours make identification much easier than following the line with your fingers.
Try to get colour-coded Ethernet cables if you can, at least 30 centimeters in lenght
You also need something to make the cluster nodes talk to eachother. For this you can use a cheap 5-port switch like this one. It's almost the same size as the Raspberry Pi 3 B+ boards and, with some adjustments, it fits nicely on the first level of the four node cluster. If you have a router at home you can use that to connect your new switch with the rest of the world. If not, you can get a small portable router with AP and 3G functions that - coincidentlly - has the exact same height and colour as the 5-port switch.
This switch fits almost perfectly in the rack and has 5 Ethernet ports
If you give the cluster resource-intensive tasks the Raspberry Pi ARM CPUs will get burning hot after an hour or so, even at room temperature. Compiling with GCC for 90 minutes will make each CPU reach 70-71 degrees Celsius (158-160 Farhenheit) so you'll need to reduce that heat somehow. You can either get a cluster rack that already has 5V coolers installed or you can get coolers of your own, about 4 or 5cm in diameter and install them yourself with the aid of screws. A cooler will keep CPU temperature from rising above 50 degrees Celsius (122 Fahrenheit). If you also get some cheap heat sinks designed for the Raspberry Pi 3 B+ you can make the temperature drop a further 4 or 5 degrees Celsius (about 40 degrees Fahrenheit).
Cooling is important not only to protect your CPUs but also to make sure the cluster nodes process tasks at a decent speed. If you bought your own coolers and your cluster rack has none you will also need a bunch of 3mm screws, 4cm in lenght. To build the rack and set the Raspberry Pi boards inside so that they won't move you will also need 2mm screws, about 1cm in lenght, four pieces for each of the four boards, 16 in total.
Cooling down your Linux Raspberry Pi cluster is very important
For powering the cluster you have to use a Power USB HUB. Also get some duct tape, as you will probably need it.WARNINGMake sure you get a good a Power USB HUB that is capable of delivering the 2,5 amps needed by each cluster node. It has to have a socket so you can plug it in directly into a power socket. The ones you see advertised as being able to deliver power directly from an USB port won't do, as the Pi's will either refuse to boot or report undervoltage.
Last but not least, buy a decent cluster rack for the Raspberry Pi's. As stated above, you can either get one that already has coolers installed or one without coolers and you can later decide how and where to install them. Be advised, should you chose the latter, you will probably need longer brass spacers, exactly 4 centimeters in height, as this is the ideal space a cluster cooler needs to both be able to cool dowd a CPU and have enough space above it to grab air from. The rack is modular and you can add extra levels to it, but for now we'll only need five: "ground floor" for the switch and the rest for each of the Raspberry Pi's.
If you decide to mount your own coolers make sure you leave them enough space to grab cool air from
The switch can be fitted nicely on the rack's bottom shelfAssembly
The assembly part is rather self-explanatory. You need to take each rack plate and mount a Raspberry Pi 3 B+ board on it with the aid of the 2mm screws. Build each level, put the rack together with the help of brass spacers, install the coolers right above the CPUs if your rack has none by drilling holes in each acrylic rack plate and using the 4cm long, 3mm diameter screws so that the coolers are close to the processors.
Insert the power cables, connect each of the Ethernet cables to one LAN port on the switch and insert the MicroSD cards in their respective slots. Use the duct tape to keep the Ethernet and USB power cables nicely grouped together so that they won't encumber you.
Once assembled, your future Linux cluster should look something like thisConclusion
In the second part of this series we'll start installing Linux on the cluster and go into operating system configuration and useful software installation, so stay tuned.
This section provides a basic step-by-step installation of Red Hat Linux from a CD-ROM. There are many different ways to proceed with an install, and the Red Hat Linux installer can provide a graphical or text-based interface in a variety of modes. The example approach outlined here should work with any PC and can be used as a starting point for learning more about installing Red Hat Linux.
To get started, insert the first Red Hat Linux CD-ROM and reboot your computer. You'll first see a boot screen that offers a variety of options for booting. These options (shown in Figure 3.1) are
<ENTER>—Start the install using a graphical interface
text—Start the install using a graphical text interface
lowres—Start the install using a 640x480 resolution
nofb—Start the install avoiding use of a video framebuffer
expert—Offer manual installation and configuration during the install, and disable autoprobing of hardware by the installer
linux rescue—Boot to single-user mode with a root operator prompt, disabling X, multitasking and networking
linux dd—Use a driver disk and possibly one or more kernel arguments (such as linux mem=512M expert) to enable certain types of hardware, such as networking cards
Figure 3.1 Select a type of installation, installation mode, or rescue installation when first installing Red Hat Linux.
Other options that can be used at the boot prompt include setting a specific resolution and color depth for the installation. This is done by typing vga= at the boot prompt, along with a number such as
773—use 256 colors at 1024x768
775—use 256 colors at 1280x1024
791—use thousands of colors at 1024x768
794—use thousands of colors at 1280x1024
Function keys can be used at the boot prompt to get more information about an installation mode or to enable a mode. Pressing F2 provides a single screen of help text. Pressing F3 gives information about the expert mode. Pressing F4 describes how to pass kernel arguments. Pressing F5 describes Red Hat's rescue mode.
Press the spacebar to halt an automatic boot to the install. Type the word text at the boot prompt and press Enter to continue. The installer's kernel will load, and you'll be asked to select a language for the installation, as shown in Figure 3.2.
Use the Tab key to navigate to scrolling lists or buttons in the graphical dialog box. Scroll through the list to highlight a language, and then use the Tab key to highlight the OK button and press Enter. You'll then be asked to select a keyboard for the install, as shown in Figure 3.3.
Figure 3.2 Select a language to use when installing Red Hat Linux.
Figure 3.3 Select a default keyboard to use when installing and using Red Hat Linux.
Again, select a keyboard, and then highlight the OK button and press Enter. You'll next be asked to select a pointing device, as shown in Figure 3.4.
Figure 3.4 Select a pointing device to use when installing and using Red Hat Linux.
Select a mouse type to use for Red Hat Linux sessions. Note that Red Hat Linux supports USB devices, including USB mice. If you have a two-button mouse, select it by scrolling through the list. Note that three-button emulation will be automatically selected. (This emulation enables a middle-mouse button to be simulated when both the left and right mouse buttons are pressed simultaneously.) Highlight OK to continue. You'll see a splash screen and will be offered the opportunity to go back to change the previous settings. If the settings are correct, highlight the OK button and press Enter. You'll be asked to select a type of installation, as shown in Figure 3.5.
Figure 3.5 Select a type of Red Hat Linux installation.
Select a type of installation using your cursor keys and the Tab key. The Workstation, Server, and Laptop installations offer a unique set of preselected software libraries and packages. The Custom installation allows selection of individual software packages with the ability to resolve any dependency issues automatically. Software dependencies should be resolved in order to have a stable system because some software packages depend on other software packages to function properly.
You can use Linux virtual consoles during installation to monitor the hardware detection, gain access to a single-user shell, and view progress of the installer script. When using a graphical installer, press Ctrl+Alt+F1+4 to navigate to the various screens. Press Alt+F7 to jump back to the installer. When performing a text-based installation, use Alt+F1+4; use Alt+F1 to jump back to a text-based install, and Alt+F5 to jump back to the install screen if you use a graphical install.
In this example, select a Server install and press Enter to continue. You'll then see a screen, as shown in Figure 3.6, that offers a choice of partitioning schemes and tools.
Figure 3.6 Select a partitioning scheme or tool.
The Autopartition button will partition your hard drive according to the type of selected installation, and automatically configure the partitions for use with Linux. The Disk Druid button will launch a graphical partition editor. The fdisk button will launch the Linux fdisk utility. The fdisk command offers the ability to create (not format) nearly 60 different types of partitions, but has a text-based interface.
Click the Disk Druid button. If you are using a new hard drive that hasn't previously been partitioned, you'll be asked if you would like to create new partitions on the drive. Click the Yes button to initialize the drive. If you are using a hard drive that has been previously partitioned or formatted and the partitions are recognized, Disk Druid will present a graphical interface. Figure 3.7 shows a hard drive with nearly 1.5GB of free space that hasn't been partitioned.
Figure 3.7 Partition your drive before installing Red Hat Linux.
To use Disk Druid, select any listed free space, and then press the New button. To create free space, scroll to an existing partition and use the Delete button to delete the partition. If you use the New button, you'll see a dialog box as shown in Figure 3.8.
The Add Partition dialog box is used to select a hard drive, assign a mount point (such as /boot or /), assign a filesystem (such as ext2, ext3, RAID, swap, or vfat), assign the size of the partition, and assign a filesystem check. The size of the partition can be fixed, or if you press the spacebar when selecting the Fill All Available Space field, will use all remaining free space. The Check for Bad Blocks item is used to verify low-level formatting (and will take a long time on a hard drive with a capacity larger than 1GB). Use the OK button when finished.
Figure 3.8 Set partition information about a selected or new partition on a hard drive.
Red Hat Linux requires at least a root (/) and swap partition. The swap partition should be more than twice as large as the amount of installed memory, and perhaps three times as large because of new memory requirements of the Linux 2.4–series kernel. Figure 3.9 shows a completed partitioning scheme for a server with an initial 1.5GB hard drive. Note that you can assign other schemes, such as a remote /home partition, but this can be accomplished after installation.
Figure 3.9 Review your partitioning scheme for your hard drive.
Take a moment to review your partitioning scheme. Changes can be made by selecting a desired partition, and then using the Edit or Delete button, followed by use of the New button to use any free space. When satisfied, use the OK button to continue the install. You'll then be asked (as shown in Figure 3.10) to select a boot loader for booting Red Hat Linux, or whether you'd prefer not to use a boot loader (when booting from floppy, a DOS partition, or over a network).
Figure 3.10 Select whether you want to use a boot loader, and if so, which type.
Using GRUB or LILO depends on your need for a particular feature, familiarity or preference. The GRUB loader works with all BSD UNIX variants and many proprietary operating systems. The utility also supports menuing, command lines, installed RAM detection, and diskless and remote network booting. On the other hand, LILO has a much longer Linux history and might be more familiar to long-time Linux users. Select the desired boot loader, and then use the OK button, and you'll be asked where you want to install the boot loader, as shown in Figure 3.11.
GRUB and LILO are typically installed in the MBR of the first IDE hard drive in a PC. However, the boot loader can also be installed in the first sector of the Linux boot partition. Note that you can also backtrack through the install process to change any settings. Select a location and use the OK button to continue. You'll then be asked (as shown in Figure 3.12) if you'd like to pass any kernel arguments before booting Linux.
Figure 3.11 Select where you'd like to install the boot loader.
Figure 3.12 Enter any desired kernel arguments to be passed by the boot loader.
Enter the arguments in the dialog box or use the OK button to continue. After you press Enter, you can graphically edit the loader's configuration file to add or remove choices of booting other operating systems. The default operating system to boot will be Red Hat Linux, but if you are configuring a dual-boot system, you can configure the boot loader, either now or later on when using Red Hat Linux, to support booting another installed operating system residing on a different partition. When finished, click the OK button, and you'll be asked to select a firewall configuration, as shown in Figure 3.13.
You'll be asked to configure network settings if your computer's installed network adapter is recognized by the Red Hat installer. If you install a recognizable network adapter after installation, Red Hat Linux will ask during the boot process if you'd like to configure the adapter. Network adapters can also be configured by using the netconf command.
Figure 3.13 Selected a desired security level.
Use the dialog box shown in Figure 3.13 to set a security level. Although the No firewall setting isn't recommended, this setting can be used if you're using Red Hat Linux as a non-networked workstation. The Medium setting might be acceptable for use on an intranet protected by a firewall and served by an Internet gateway. Certainly use a high security level if your computer is attached directly to the Internet. Note that you can also manually configure security settings after installing Red Hat Linux. Use the Customize button to choose allowable services, as shown in Figure 3.14.
The dialog box in Figure 3.14 should be used to set allowable incoming service requests. This is important if you want to allow requests immediately following installation and the start of Red Hat Linux. For some servers, HTTP, FTP and Simple Mail Transport Protocol (SMTP) requests are acceptable and reasonable. Use the OK button when you finished selecting services. You'll then be asked to select any additional languages you'd like supported by the installed Red Hat Linux system. You'll then see a Time Zone Selection dialog box, as shown in Figure 3.15.
Figure 3.14 Select allowable incoming service requests for your custom security setting.
Figure 3.15 Select your time zone.
There are two "clocks" or times when using a PC: the hardware clock, maintained by chips in the computer and a backup battery; and the system time, set upon booting and used by the Linux kernel. It is important to keep the two times accurate and in synchronization because automated system administration might need to take place at critical times. Many computer installations use computers with hardware clocks set to Greenwich Mean Time (a misnomer because the correct designation is UTC or Coordinated Universal Time). The Linux system time is then set relative to this time and the current time zone, such as Eastern Standard Time, which is -5 hours of UTC. Setting the computer's hardware clock to UTC (GMT) has the advantage of allowing the Linux system time to be easily set relative to the geographic position of the computer and resident time zone. (Such as a Linux laptop user who would like to create files or send electronic mail with correct time stamps, and who has traveled from New York to Tokyo).
Read the manual page for the hwclock command to learn how to keep a running Linux system synchronized with a PC's hardware clock.
Choose your time configuration, and then press the OK button. You'll then be asked to enter a root operator password. Type in a password, press Enter, and then type it again to make sure that it is verified. The password, which is case sensitive, should be at least six characters (or more) and consist of letters and numbers. Note that the password isn't echoed back to the display. When finished, use the OK button to continue. You can then create a normal user account, as shown in Figure 3.16.
Figure 3.16 Create a user account for use with Red Hat Linux.
Create a user account for yourself and any additional users of the system. Users are assigned a username, password, shell, and home directory. The default home directories reside under the /home directory. When finished, use the OK button to continue. You can then add additional users if you created a user for your system. (Even if you use Red Hat Linux on a standalone workstation, you should create a user for yourself, and then use the su or sudo commands to perform root tasks.)
In the Package Group Selection dialog box, shown in Figure 3.17, are select software groups, each of which contains many different software packages.
Figure 3.17 Select software package groups for installation.
Use the spacebar to select various groups of software packages. Note that the size of the installed software will dynamically reflect your choices. Use the Select Individual Packages item to choose individual software packages. This can allow fine-tuning of the software installation to only installing desired commands or clients, and to prune unwanted software. Use the OK button when finished. You'll then be asked to configure a video card for the X Window System (if selected for installation) as shown in Figure 3.18.
You won't be asked to select a video card if you don't install the X software. Note that you can select and choose X software for installation, and then skip the configuration step and configure X for Red Hat Linux after installing. See Chapter 6, "The X Window System," for details on configuring X to work with a PC's graphics card. If you select a graphical or text-based install and don't use the Expert mode to install Red Hat Linux, your graphics hardware will be automatically probed.
Figure 3.18 Select a video card for use with X11 or skip the configuration.
After X configuration or skipping the configuration, the installer will then format your partitions using your settings. Next, an install image will be transferred to the formatted partition for use during the install. The installer will then check your software selection for any package dependencies and begin copying software from the CD-ROM (or a selected source) onto the new Linux partitions, as shown in Figure 3.19.
Figure 3.19 Monitor your installation and packages.
The installer, shown in Figure 3.19, reports on the name of the current package being installed, the total number of packages, time remaining for the installation, and number of completed and remaining packages. At some point during the installation, you will be asked to remove the first CD-ROM and insert the second. When the installation finished, the installer will perform some temporary file cleanup, install the boot loader and then ask if you'd like to create a boot diskette for possible use later, as shown in Figure 3.20.
Figure 3.20 You can create a boot disk for later use.
You can create this book disk now, or you can use Red Hat's mkbootdisk command later on while using Red Hat Linux. Select Yes or No. If you choose to create a boot disk, you'll need to have a blank diskette on hand. Having a boot disk can be handy, especially if the boot loader fails to boot Linux.
After this portion of the install, you're done! Press the OK button and Red Hat Linux will eject any inserted CD-ROM and reboot. If you choose to use the LILO boot loader, you'll then be presented with a graphical boot prompt as shown in Figure 3.21. (The GRUB boot loader will look similar.)
If you do nothing for five seconds or press Enter, the boot loader will boot Red Hat Linux. To use a text-based boot prompt, press Ctrl+x and press Enter. You'll then see the boot: prompt if you use LILO. Both LILO and GRUB offer the chance to pass any required kernel arguments.
Figure 3.21 Boot Red Hat Linux by pressing the Enter key or waiting five.
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