nisdomainname – Display Host NIS domain name

The nisdomainname command is a Linux command that is used to display the Network Information Service (NIS) domain name of the host. The NIS domain name is the name of the domain that the host is a part of in the NIS system. This command is useful for system administrators who need to check the NIS domain name of a host.

Overview

The nisdomainname command is a simple command that takes no arguments. To use the command, simply type nisdomainname in the terminal and press enter. The command will output the NIS domain name of the host.

Example

$ nisdomainname
example.com

Specific use cases

• Checking the NIS domain name of a host
• Troubleshooting NIS-related issues

Options

The nisdomainname command has no options.

Troubleshooting tips

If the nisdomainname command does not output anything, it is likely that the host is not part of an NIS domain. In this case, the command will return an error message indicating that the NIS domain name could not be determined.

Notes

• The nisdomainname command only works on hosts that are part of an NIS domain.
• The NIS domain name is stored in the /etc/defaultdomain file on the host. The nisdomainname command reads this file to determine the NIS domain name.