RedHat startup service configuration options

RedHat startup service configuration options-general Linux technology-Linux technology and application information. The following is a detailed description. Acpid

Configuration File:/proc/acpi/event
Default port: None
(Advanced Configuration and Power Interface, a new Power management standard launched to replace the traditional APM Power management standards.
Need to start: If you need to manage the power supply, you need to start.
Anacron

Configuration File:/etc/anacron
Default port: None
Note: An automated running task. Red Hat Linux tool with four automated tasks: cron, anacron, at, and batc. When your Linux host is not started around the clock, this anacron will help you execute the work that has not been executed within the time set by "crontab. For example, when your host is automatically shut down at, but the crontab routine task is at, the routine task will not work at this time. However, anacron can be used.
Need to start: if the host has been started up 24 hours a day and cron is running, this daemon does not need to be started.
Apmd

Configuration File:/etc/sysconfig/apmd
Default port: None
Description: Advanced Power Management, Advanced Power Management. Traditional power management standards. Generally, the system supports both APM and APMD, but only one of them can be loaded when the system is loaded. It is useful for laptops. You can understand the "battery power" of the system ".
Need to start: if we are using a desktop computer or a model that has been running on, we do not need to use this daemon.
Atd

Configuration File:/etc/at. allow,/etc/at. deny
Default port: None
Note: An automated running task.
Whether to start: usually needs to start. However, if you keep using cron, you can also disable it.
Autofs

Configuration File:/etc/rc. d/init. d/autofs
Default port: None
Note: automatic loading of optical disks and floppy disks is realized.
Required or not: Generally, no startup is required.
Chargen
Chargen-udp

Default port: TCP/UDP 19
Note: Character Generator Protocol is a network service that provides functions similar to remote typing.
More details: http://www.networksorcery.com/enp/RFC/Rfc864.txt
Whether to enable or not: to ensure security, close the service whenever possible.
Cpuspeed

Note: The monitoring system idle percentage reduces or accelerates the CPU clock speed and voltage so as to minimize the energy consumption when the system is idle, while maximizing the system execution speed when the system is busy.
More details:
Http://altlinux.org/index.php? Module = sisyphus & package = cpuspeed
Required or not: required.
Crond

Configuration File:/etc/crontab
Default port: None
Note: daemon is used to execute routine commands.
Required or not: required.

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