Red Hat Enterprise Linux Installation Guide 5.2 - linux.meuhobby.com

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Chapter 17. Installing on IBM System z Systems Select System Clock uses UTC if you know that your system is set to UTC. Tip To change your time zone configuration after you have completed the installation, use the Time and Date Properties Tool. Type the system-config-date command in a shell prompt to launch the Time and Date Properties Tool. If you are not root, it prompts you for the root password to continue. To run the Time and Date Properties Tool as a text-based application, use the command timeconfig. 17. Set Root Password Setting up a root account and password is one of the most important steps during your installation. Your root account is similar to the administrator account used on Windows NT machines. The root account is used to install packages, upgrade RPMs, and perform most system maintenance. Logging in as root gives you complete control over your system. Note The root user (also known as the superuser) has complete access to the entire system; for this reason, logging in as the root user is best done only to perform system maintenance or administration. 202
Set Root Password Figure 17.17. Root Password Use the root account only for system administration. Create a non-root account for your general use and su - to root when you need to fix something quickly. These basic rules minimize the chances of a typo or an incorrect command doing damage to your system. Tip To become root, type su - at the shell prompt in a terminal window and then press Enter. Then, enter the root password and press Enter. The installation program prompts you to set a root password 1 for your system. You cannot proceed to the next stage of the installation process without entering a root password. The root password must be at least six characters long; the password you type is not echoed to the screen. You must enter the password twice; if the two passwords do not match, the 1 A root password is the administrative password for your Red Hat Enterprise Linux system. You should only log in as root when needed for system maintenance. The root account does not operate within the restrictions placed on normal user accounts, so changes made as root can have implications for your entire system. 203
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Red Hat Enterprise Linux 5.2 Red Ha
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Red Hat Enterprise Linux 5.2: Red H
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Introduction ......................
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4.3. Problems with the X Window Sys
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Message ...........................
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2. Upgrading Your System ..........
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Introduction Welcome to the Red Hat
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Document Conventions example: Go to
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Where to Find Other Manuals If you
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Part I. x86, AMD64, Intel® 64 and
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Chapter 1. Itanium System Specific
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Chapter 2. Steps to Get You Started
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Chapter 3. System Specifications Li
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Chapter 4. Installing on Intel® an
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Chapter 5. Removing Red Hat Enterpr
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Chapter 6. Troubleshooting Installa
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Saving Traceback Messages Without a
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Diskette Drive in run rc = self.tod
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Problems with the X Window System (
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Your Printer Does Not Work In /boot
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Chapter 7. Driver Media for Intel a
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Using a Driver Image During Install
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Chapter 8. Additional Boot Options
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Chapter 8. Additional Boot Options
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Chapter 9. The GRUB Boot Loader cap
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Chapter 9. The GRUB Boot Loader 4.
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Chapter 9. The GRUB Boot Loader The
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Chapter 9. The GRUB Boot Loader •
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Chapter 9. The GRUB Boot Loader # s
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Chapter 9. The GRUB Boot Loader For
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Chapter 11. Steps to Get You Starte
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Preparing for FTP and HTTP installa
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Preparing for a Hard Drive Installa
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Chapter 12. Installing on IBM Syste
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A Note about Linux Virtual Consoles
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The Text Mode Installation Program
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Interface display a summary of avai
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Installing via NFS 8. Performing a
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Installing via HTTP Figure 12.7. FT
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Welcome to Red Hat Enterprise Linux
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Enter the Installation Number Figur
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Disk Partitioning Setup Warning The
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Create Default Layout Figure 12.14.
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Partitioning Your System Tip [This
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Disk Druid's Buttons to edit an exi
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Recommended Partitioning Scheme •
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Adding Partitions • Mount Point:
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Network Configuration Figure 12.18.
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Time Zone Configuration password to
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Set Root Password Figure 12.21. Roo
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Package Group Selection Note Users
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Installing Packages To cancel this
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Chapter 13. Driver Media for IBM PO
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Chapter 25. An Introduction to Disk
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Partitions: Turning One Drive Into
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Partitions within Partitions — An
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of Extended Partitions Let us look
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Making Room For Red Hat Enterprise
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Partition Naming Scheme Figure 25.1
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How Many Partitions 1.7. Disk Parti
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Part V. Basic System Recovery When
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Chapter 26. Basic System Recovery W
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Chapter 26. Basic System Recovery I
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Chapter 27. Rescue Mode on POWER Sy
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Chapter 28. Kickstart Installations
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Kickstart Options autopart (optiona
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Kickstart Options Tip To look up us
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Kickstart Options the proper device
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Kickstart Options • cdrom — Ins
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Kickstart Options The file /usr/sha
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Kickstart Options networking (in ot
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Kickstart Options For a detailed ex
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Kickstart Options more information
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Kickstart Options that may be used
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Kickstart Options Allows the graphi
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Package Selection raid swap raid /u
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Example %pre #!/bin/sh hds="" mymed
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Making the Kickstart File Available
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Making the Installation Tree Availa
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Starting a Kickstart Installation T
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Starting a Kickstart Installation m
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Starting a Kickstart Installation u
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Chapter 29. Kickstart Configurator
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Boot Loader Options Figure 29.2. In
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Partition Information preserving th
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Creating Partitions Figure 29.5. Cr
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Network Configuration After creatin
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Firewall Configuration Figure 29.9.
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SELinux Configuration on port 1234
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Package Selection After configuring
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Pre-Installation Script Figure 29.1
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Chroot Environment Figure 29.16. Po
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Saving the File Figure 29.17. Previ
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Chapter 30. Boot Process, Init, and
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The Kernel following format — /bo
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The /sbin/init Program K45named ->
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Running Additional Programs at Boot
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Shutting Down 4.2. Runlevel Utiliti
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Chapter 31. PXE Network Installatio
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Command Line Configuration The next
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Performing the PXE Installation Aft
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