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Red Hat provides the Text Mode Setup utility (Setuptool) with which you can configure different devices and system settings, such as your keyboard, mouse, and time zone. It has a cursor-based interface that you run from the command line, using arrow keys, the SPACEBAR, and the ENTER key to make choices. Setuptool is useful if you have changed any of your devices-say, installed a new mouse, keyboard, or sound card. Start the Setuptool utility with the command setup, which you enter at a shell command line. On the desktop, you can open a terminal window and enter the command, or select the Text Mode Setup menu entry in the Gnome system menu. A menu of configuration choices is displayed. The utility will run within a terminal window, as if you were running it from the command line. Use the arrow keys to select one, and then press the TAB key to move to the Run Tool and Quit buttons. Figure 29-1 shows the initial Setup menu.
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Figure 29-1: Red Hat Text Mode Setup utility The Setuptool utility is actually an interface for running several configuration tools (see Table 29-1). You can call any of these tools separately using their commands. For example, the kbdconfig command starts the keyboard configuration utility that enables you to select the type of keyboard, while the mouseconfig command enables you to select the type of mouse. These tools will generate configuration files defining variables for use in enabling devices and services. Most are found in the /etc/sysconfig directory. For example, mouseconfig defines configuration variables that it then saves to the /etc/sysconfig/mouse file. Table 29-1: Setup Tools Configuration File Description Red Hat Setuptool interface listing configuration tools for system and device setting. /etc/sysconfig/authconfig Authentication options, such as enabling NIS, shadow passwords, and MD5 /etd/sysconfig/network passwords. /etc/sysconfig/ipchains Selects the level of firewall protection: High, Medium, and None. gnomelokkit runs a Gnome interface. Selects the keyboard type. Selects the mouse type.
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Table 29-1: Setup Tools Configuration File Description /etc/sysconfig/network /etc/sysconfig/networkscripts/ifcfg-ethN /etc/sysconfig/auth Sets your LAN network settings.
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ntsysv sndconfig timeconfig Xconfigurator
Selects servers and daemons to start up at boot time. Selects the time zone. Configures your X Window System for your video card and monitor.
/etc/sysconfig/soundcard Detects and configures your sound card. /etc/sysconfig/clock /etc/sysconfig/localtime /etc/X11/XF86Config
authconfig is used to enable authentication services such as NIS, Kerberos, and LDAP. It displays a dialog box for enabling the Network Information Service (NIS), password encryption, and LDAP support. You find an entry for NIS, and entries for the shadow and MD5 password security methods. authconfig places its configuration information in several files. The etc/sysconfig/authconfig file specifies whether certain authentication services are enabled. It will further configure configuration files for the services selected, such as /etc/krb5.conf for Kerberos authentication and /etc/yp.conf for NIS support, as well as /etc/openldap/ldap.conf for LDAP authentication. With lokkit, you can select the level of firewall protection at High, Medium, or None. An advanced option lets you select different services to be allowed such as mail, the secure shell, FTP, the Web server, and the FTP server. You can also run gnome-lokkit, which will prompt you for different settings using Gnome dialog boxes. Lokkit currently provides firewall rules only for the older IP-Chains firewall service. It does not support the newer IP-Tables. lokkit places its IP-Chains firewalling rules in the /etc/sysconfig/ipchains file. With kbdconfig, you can select the type of keyboard you are using. A cursor-based dialog box appears with a list of different keyboard types. kbdconfig places its configuration information in the etc/sysconfig/keyboard file. With mouseconfig, you can select the type of mouse you are using. A cursor-based dialog box appears with a list of different mouse device types. Your system is automatically probed for the type of mouse connected to your system, and the cursor is positioned at that entry. If you have a two-button mouse, you can select the three-button emulation option to let a simultaneous click on both the left and the right mouse buttons emulate a third mouse button. kbdconfig places its configuration information in the etc/sysconfig/mouse file. It will also set the /dev/mouse symbolic link to the mouse device file. With netconfig, you can enter the LAN setting for your network connections. This tool will not help for modem connections. Here you can enter basic LAN settings like your IP address, gateway address, netmask, and DNS server addresses. netconfig places its network configuration information like the hostname and gateway in the etc/sysconfig/network file. Specific Ethernet device configurations, which would include your IP address and netmask, are place in the appropriate Ethernet device configuration file in the /etc/sysconfig/networkscripts directory. For example, the IP address and netmask used for the eth0 Ethernet device
can be found in /etc/sysconfig/network-scripts/ifcfg-eth0. Local host settings are in /etc/sysconfig/network-scripts/ifcfg-lo. The ntsysv utility is a simple utility for specifying which servers and services should be automatically started at boot time (see 15). The dialog box lists the possible servers and services to choose from. Move to the entry you want and use the SPACEBAR to toggle it on or off. An entry with an asterisk next to it is selected and is started automatically the next time you boot your system. ntsysv uses chkconfig to make its changes to the startup services. The sndconfig utility enables you to select and configure your sound card. It initially tries to detect your sound card automatically. If the automatic detection fails, a dialog box appears with a listing of different sound cards. Select the one on your system. Another dialog box appears where you need to enter the setting for your sound card. sndconfig then tries to play sample sound and MIDI files to test the card. As an alternative to sndconfig, you can obtain, load, and configure sound drivers yourself. sndconfig places its configuration information in the etc/sysconfig/soundcard file. It will also store the appropriate module specification in the /etc/modules.conf file, as well as the /etc/isapnp.conf file if needed. You can use the simple timeconfig utility to specify your system's time zone. This is useful if your system has moved to a different time zone. timeconfig places its configuration information in the etc/sysconfig/clock and /etc/localtime files. One important utility is the X Window System setup provided by Xconfigurator. If you have trouble with your X Window System configuration and can no longer start up your graphical interface, you can use the Xconfigurator command to configure it from the command line. You could switch to or start up in runlevel 3, the text mode, and then run Xconfigurator entirely from the command line, without ever having to run the X Window System. Xconfigurator is also helpful for updating X Windows if you change your video card. Run Xconfigurator again and select the card. When you download a new version of XFree86, the packages includes a compatible version of Xconfigurator. Xconfigurator will generate the X Window System /etc/X11/XF86Config configuration file and use the specifications in /etc/sysconfig/mouse to configure your X Window System mouse.
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