On Unix-like operating systems, the hostid command the host identification number for the system. This unique number is based on the machine’s IP address, and is represented in hexadecimal.

This page describes the GNU/Linux version of hostid.

Syntax

hostid [option]

Options

Examples

hostid

Performing the command above would display the current host’s numerical id, for example:

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hostname — Print the numeric identifier for the current host.