Chapter 3. Boot Process, Init, and Shutdown

73

3.7.1.33.

/etc/sysconfig/squid

The

/etc/sysconfig/squid

file is used to pass arguments to the

squid

daemon at boot time.

The

squid

daemon is a proxy caching server for Web client applications. For more information

on configuring a

squid

proxy server, use a Web browser to open the

/usr/share/doc/squid 

!

version /

directory (replace

version

with the

squid

version number installed on your

"

#

$

system). By default, this file sets

squid

top start in daemon mode and sets the amount of time before

it shuts itself down.

3.7.1.34.

/etc/sysconfig/tux

The

/etc/sysconfig/tux

file is the configuration file for the Red Hat Content

Accelerator (formerly known as TUX), the kernel based web server. For more information

on configuring the Red Hat Content Accelerator, use a Web browser to open the

/usr/share/doc/tux 

!

version /tux/index.html

(replace

version

with the version

"

#

$

number of TUX installed on your system). The parameters available for this file are listed in

/usr/share/doc/tux 

!

version /tux/parameters.html

.

"

3.7.1.35.

/etc/sysconfig/ups

The

/etc/sysconfig/ups

file is used to specify information about any Uninterruptible Power Sup 

plies (UPS) connected to your system. A UPS can be very valuable for a Red Hat Linux system

because it gives you time to correctly shut down the system in the case of power interruption. The

following values may be used:

  SERVER=

!

value

, where

!

value

is one of the following:

"

"

yes

  A UPS device is connected to your system.

no

  A UPS device is not connected to your system.

  MODEL=

!

value

, where

!

value

must be one of the following or set to

NONE

if no UPS is

"

"

connected to the system:

apcsmart

  For a APC SmartUPS  or similar device.

fentonups

  For a Fenton UPS .

optiups

  For an OPTI UPS  device.

bestups

  For a Best Power  UPS.

genericups

  For a generic brand UPS.

ups trust425+625

  For a Trust  UPS.

  DEVICE=

!

value

, where

!

value

specifies where the UPS is connected, such as

/dev/ttyS0

.

"

"

  OPTIONS=

!

value

, where

!

value

is a special command that needs to be passed to the UPS.

"

"

3.7.1.36.

/etc/sysconfig/vncservers

The

/etc/sysconfig/vncservers

file configures the way the Virtual Network Computing (VNC)

server starts up.

VNC is a remote display system which allows you to view a desktop environment not only on the

machine where it is running but across different networks on a variety of architectures.