Linux Configuration Files

Overview

• The configuration files in the etc directory play the same role in Linux that the registry does in Windows.
• The big difference is that you can write comments in a configuration file
• Learn about fstab, ftpaccess, hosts.deny, and many other key configuration files.
• Learn to use LinuxConf to configure many of these files.
• Back up your configuration files!

rc.d/rc.local

fstab

exports

resolv.conf

httpd.conf

network

• What I'm talking about here is how networking us set up under RedHat and Mandrake and other RedHat derivatives
• The network file establishes the basic info about your network environment

NETWORKING=yes
HOSTNAME=shadowfax
GATEWAYDEV=eth0
GATEWAY=10.254.2.17

ifcfg-eth0

• This is how you set up your ethernet connection
• The file is located in /etc/sysconfig/network-scripts/

DEVICE=eth0
USERCTL=no
ONBOOT=yes
BOOTPROTO=none
BROADCAST=10.254.2.31
NETWORK=10.254.2.0
NETMASK=255.255.255.224
IPADDR=10.254.2.16

inetd and xinetd

httpd

• In some cases, you may want to change, or uncomment: ServerName localhost

User apache
Group apache

User ccalvert
Group nobody

#CGI Module
ScriptAlias /scripts/ "/home/ccalvert/scripts/"

  AllowOverride None
  Options ExecCGI
  Order allow,deny
  Allow from all

  

At the very end of the file, and this is the most important part:

SetEnv LD_LIBRARY_PATH /home/ccalvert/kylix/bin:/home/ccalvert/kylix
SetEnv HOME /home/ccalvert
SetEnv LANG en_us