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/Rust

Function hostname 

pub fn hostname() -> Result<OsString>
🔬This is a nightly-only experimental API. (gethostname #135142)

Returns the system hostname.

This can error out in platform-specific error cases; for example, uefi and wasm, where hostnames aren’t supported.

Underlying system calls

Platform System call
UNIX gethostname
Windows GetHostNameW

Note that platform-specific behavior may change in the future.

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/net/fn.hostname.html