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This article mainly explains "how to use the chkconfig command in Linux". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how to use the chkconfig command in Linux".

Chkconfig provides a command-line tool for maintaining / etc/rc [0room6] d folders, which reduces the burden of the system directly managing symbolic links in these folders. Chkconfig mainly includes five original functions: adding new services for system management, removing services for system management, listing the startup information of single-sign services, changing the startup information of services, and checking the startup status of special services. When the chkconfig command is run separately without any arguments, it will display the usage information of the service.

Necessary parameters

-- add starts the specified service program

-- del closes the specified service program

-- list lists all the services that chkconfig knows

Select parameters

-- level sets the level code of the service program, which is a string of 0,7 numbers, such as "- level35" for specified running levels 3 and 5.

-- help displays help information

-- version displays version information

Usage 1

The code is as follows:

[root@localhost www] # chkconfig-- list # View the list of system programs

[root@localhost www] # chkconfig httpd on # add httpd to boot boot

[root@localhost www] # chkconfig httpd off # shutdown httpd boot boot

Usage 2

The code is as follows:

[root@localhost tank] # chkconfig-- add nginx # add a nginx startup script for a service managed by chkconfig

[root@localhost tank] # chkconfig-- del nginx # removes the nginx startup service managed by chkconfig

Example:

After installing cent os 64-bit, there are not many unnecessary services by default, which are listed with the following command:

The code is as follows:

Chkconfig-- list | grep: on

Cups printing service yum-updatesd often takes up a lot of CPU and memory pcscd smart cards during busy times, such as SD card reader hidd and bluetooth Bluetooth cpuspeed intelligent adjustment CPU, notebook with gpm mouse copy and paste after the first installation of firstboot

The code is as follows:

Chkconfig cups off

Chkconfig yum-updatesd off

Chkconfig pcscd off

Chkconfig hidd off

Chkconfig bluetooth off

Chkconfig cpuspeed off

Chkconfig firstboot off

Chkconfig gpm off

The following content comes from the network and has not been verified for its function.

The code is as follows:

Chkconfig rhnsd off

Chkconfig anacron off

Chkconfig arptables_jf off

Chkconfig autofs off

Chkconfig openibd off

Chkconfig messagebus off

Chkconfig rawdevices off

Chkconfig canna off

Chkconfig atd off

Chkconfig iiim off

Chkconfig pcmcia off

Chkconfig haldaemon off

Chkconfig iptables off

Chkconfig mdmonitor off

Chkconfig hpoj off

# chkconfig nfslock off

Chkconfig acpid off

Chkconfig sendmail off

Chkconfig cups off

Chkconfig isdn off

Chkconfig irqbalance off

Chkconfig microcode_ctl off

Chkconfig cups-config-daemon off

Chkconfig ip6tables off

Other: shut down nfs related services and shut down rpc related services

Close

The code is as follows:

SELinux vi / etc/selinux/config

Thank you for your reading, the above is the content of "how to use the chkconfig command in Linux". After the study of this article, I believe you have a deeper understanding of how to use the chkconfig command in Linux, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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