What does the Chkconfig command do?

chkconfig command is used to list all available services and view or update their run level settings. In simple words it is used to list current startup information of services or any particular service, updating runlevel settings of service and adding or removing service from management.

How do I enable Chkconfig?

To get a list of which services are started at which run level, use the command “chkconfig –list“. # chkconfig –list acpid 0:off 1:off 2:on 3:on 4:on 5:on 6:off auditd 0:off 1:off 2:on 3:on 4:on 5:on 6:off blk-availability 0:off 1:on 2:on 3:on 4:on 5:on 6:off cgconfig 0:off 1:off 2:off 3:off 4:off 5:off 6:off …

How do I find Chkconfig list?

There are 7 run level defined in Linux.

1. 0 – Shut down the System.
2. -v : to check the version of chkconfig command.
3. –list : to list all the services managed under chkconfig.
4. –level : Specify init run level from 0 to 6.
5. –add : this option will add the service under chkconfig management.

What are Chkconfig runlevels?

chkconfig. The chkconfig tool is used in RedHat based systems (like CentOS) to control what services are started at which runlevels. Booting a system into this mode does not start networking, but can be used to make changes to any configuration files on the server.

What is the use of top command?

top command is used to show the Linux processes. It provides a dynamic real-time view of the running system. Usually, this command shows the summary information of the system and the list of processes or threads which are currently managed by the Linux Kernel.

What is ETC Inittab?

The /etc/inittab file is the configuration file used by the System V (SysV) initialization system in Linux. This file defines three items for the init process: the default runlevel. what processes to start, monitor, and restart if they terminate. what actions to take when the system enters a new runlevel.

Which command is used for?

In computing, which is a command for various operating systems used to identify the location of executables. The command is available in Unix and Unix-like systems, the AROS shell, for FreeDOS and for Microsoft Windows.

How is chkconfig used in RedHat CentOS 7?

In this article, I will take you through 8 Popular chkconfig command examples on RedHat/CentOS 7. chkconfig command is used to enable system services in different run level. Run Level is defined as the state of Init Process under which a group of processes and services start with the booting of the Linux OS. There are 7 run level defined in Linux.

Which is the first command in chkconfig in Linux?

First command starts httpd services on run level 3 and 5 and second command verifies the status of httpd services running on run level. 4. How to Check Which Services are On/Off The following command will display all the services which are On and Off in specific run level 5.

Which is an example of chkconfig in rd.d?

The Chkconfig command tool allows to configure services start and stop automatically in the /etc/rd.d/init.d scripts through command line. Let’s see some examples. 1. List All Services Using ‘ –list ‘ parameter will displayed all services and their current start-up status in each run-level configuration.

How to run chkconfig on Run Level 1?

1. Check chkconfig command version 2. List All the Services 3. Enable httpd Service on Run Level 1 and 3 4. Disable httpd Service on Run Level 1 and 3 5. List a Service using chkconfig command 6. Add httpd Service 7. Delete httpd Service 8. Do not redirect requests to Systemd