28.2. Directories in the /etc/sysconfig/ Directory

28.2. Directories in the /etc/sysconfig/ Directory

The following directories are normally found in /etc/sysconfig/.


This directory contains the APM suspend/resume script. Do not edit the files directly. If customization is necessary, create a file called /etc/sysconfig/apm-scripts/apmcontinue which is called at the end of the script. It is also possible to control the script by editing /etc/sysconfig/apmd.


This directory contains the configuration files needed to do Class Based Queuing for bandwidth management on network interfaces. CBQ divides user traffic into a hierarchy of classes based on any combination of IP addresses, protocols, and application types.


This directory is used by the Network Administration Tool (system-config-network), and its contents should not be edited manually. For more information about configuring network interfaces using the Network Administration Tool, refer to Chapter 15, Network Configuration.


This directory contains the following network-related configuration files:

  • Network configuration files for each configured network interface, such as ifcfg-eth0 for the eth0 Ethernet interface.

  • Scripts used to bring network interfaces up and down, such as ifup and ifdown.

  • Scripts used to bring ISDN interfaces up and down, such as ifup-isdn and ifdown-isdn.

  • Various shared network function scripts which should not be edited directly.

For more information on the network-scripts directory, refer to Chapter 14, Network Interfaces.


This directory contains the configuration files and GPG keys for Red Hat Network. No files in this directory should be edited by hand. For more information on Red Hat Network, refer to the Red Hat Network website online at https://rhn.redhat.com/.

Note: This documentation is provided {and copyrighted} by Red Hat®, Inc. and is released via the Open Publication License. The copyright holder has added the further requirement that Distribution of substantively modified versions of this document is prohibited without the explicit permission of the copyright holder. The CentOS project redistributes these original works (in their unmodified form) as a reference for CentOS-5 because CentOS-5 is built from publicly available, open source SRPMS. The documentation is unmodified to be compliant with upstream distribution policy. Neither CentOS-5 nor the CentOS Project are in any way affiliated with or sponsored by Red Hat®, Inc.