To verify that a service is turned on in xinetd (the extended Internet services daemon) under Fedora or Red Hat Linux, you can check the status of the service using the chkconfig command. This command allows you to view the status of system services and to enable or disable them as needed.
To check the status of a service in xinetd, open a terminal and run the following command:
refer to:lautturi.comchkconfig --list [service_name]
Replace [service_name] with the name of the service that you want to check. For example, to check the status of the FTP service in xinetd, you can run the following command:
chkconfig --list ftp
This will display the status of the FTP service in xinetd. The output will show you whether the service is turned on or off for each runlevel (a set of system states used by Linux to determine which services to start or stop at boot time). If the service is turned on, the output will show a "on" value for the runlevels in which the service is enabled. If the service is turned off, the output will show a "off" value for the runlevels in which the service is disabled.
For example, the following output shows that the FTP service is turned on in runlevels 3 and 5:
ftp 0:off 1:off 2:off 3:on 4:off 5:on 6:off
This means that the FTP service will be started at boot time when the system is in runlevels 3 or 5.
These are the basic steps to verify that a service is turned on in xinetd under Fedora or Red Hat Linux. Consult the documentation of chkconfig and xinetd and the online resources available for more information on how to use these tools and the various options and features available.