RH033 Unit10 Baisc System Configuration Tools

Objectives Upon completion of this unit, you should be able: Configure date, network and printer settings
Send text to printer
Set the system’s date and time
TCP/IP Network Configuration 1) Important network settings: IP Configuration
Device Activation
DNS Configuration
Default Gateway
Managing Ethernet Connections 1) Network interfaces are named sequentially: eth0, eth1, etc Multiple addresses can be assigned to a device with aliases
Aliases are labeled eth0:1, eth0:2, etc.
Aliases are treated like spereated interfaces
2) View interface configuration with ifconfig [ethx] 3) Enable interface with ifup ethx 4) Disable interface with ifdown ethx Graphical Network Configuration system-config-network 1) System –> Administration –> Network Activate/ Deactivate interfaces
Assign IP address/ DHCP
Modify DNS settings
Modify gateway address
Network Configuration File Ethernet Devices 1) Device configuration is stored in text files /etc/sysconfig/network-scripts/ifcfg-ethx
Complete list of options in  /usr/share/doc/initscripts-*/sysconfig.txt
Network Configuration Files Other Global Network Settings 1) Global settings in /etc/sysconfig/network Many may be provided by DHCP
GATEWAY can be overridden in ifcfg file
Network Configuration Files DNS Configuration 1) Domain Name Service translate hostname to network address 2) Server address is specified by dhcp or in /etc/resolv.conf     nameserver 192.168.0.254     nameserver 192.168.1.254 Printing in Linux 1) Printers may be local or networked 2) Print requests are sent to queues 3) Queued jobs are sent to the printer on a first come first served basis 4) Jobs may be canceled before or during printing system-config-printer 1) System –> Administration –> Printing 2) Supported printer connections: Local (parallel or usb)
Unix/Linux print server
Window print server
Netware print server
HP JetDirect
3) Configuration stored in /etc/cups/printers.conf Printing Commands 1) lpr sends a job to the queue to be printed Accepts ASCII, PostScript, PDF, others
2) lpq views the contents of the queue 3) lprm removes a job from the queue 4) System V printing commands such as lp, lpstat and cancel are also supported Printing Utilities 1) evince views PDF documents 2) lpstat –a lists configured printers 3) enscript and a2ps converts text to PostScript 4) ps2pdf converts PostScript to PDF 5) mpage prints multiple page per sheet Setting the System’s Date and Time 1) GUI: system-config-date System –> Administration –> Date & Time
Can set date/time manually or use NTP
Additional NTP servers can be added
Can use local time or UTC
2) CLI: date [MMDDhhmm[[CC]YY][.ss]] date 01011330
date 010113302007.05
End of Unit10 1) Quetions and Answers 2) Summary system-config-network
/etc/sysconfig/network-scripts/*
ifup, ifdown
date configures date/time from CLI
system-config-date configures date/time from GUI