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21.6 hostid: Print numeric host identifier

hostid prints the numeric identifier of the current host in hexadecimal. This command accepts no arguments. The only options are --help and --version. See Common options.

For example, here's what it prints on one system I use:

     $ hostid

On that system, the 32-bit quantity happens to be closely related to the system's Internet address, but that isn't always the case.

An exit status of zero indicates success, and a nonzero value indicates failure.