---
syntax: markdown
tags: [tldr, linux]
source: https://github.com/tldr-pages/tldr.git
---
# dnsdomainname

> Show the system's DNS domain name.
> Note: The tool uses `gethostname` to get the hostname of the system and then `getaddrinfo` to resolve it into a canonical name.
> More information: <https://www.gnu.org/software/inetutils/manual/html_node/dnsdomainname-invocation.html>.

- Show the system's DNS domain name:

`dnsdomainname`