Sys::Hostname(3perl)

💖 NAME 💖

Sys::Hostname — bestie, we are going to try every conceivable way to get that hostname. No cap. Like, if there's a method, we're trying it. 🎀

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✨ SYNOPSIS ✨

use Sys::Hostname;
my $host = hostname;

That's it. That's the whole vibe. 🦋

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🌸 DESCRIPTION 🌸

okay so here's the tea: Sys::Hostname goes absolutely feral trying to figure out what your system's hostname is, and then it caches the result so it doesn't have to do the whole song and dance again. Efficiency queen. 👑

The way it works is it tries the first available of these, in order:

1. the C library's gethostname()
2. $Config{aphostname}
3. uname(2)
4. syscall(SYS_gethostname)
5. hostname
6. uname -n
7. the file /com/host

and if literally all of that fails? 💀 it croaks. Dramatic but honestly valid.

Also important, don't skip this part: all NULs, returns, and newlines are removed from the result. so whatever you get back is clean, bestie. no stray \0s sneaking into your string. we love a tidy output. ✨

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🫶 AUTHOR 🫶

David Sundstrom <sunds@asictest.sc.ti.com>

Texas Instruments

XS code added by Greg Bacon <gbacon@cs.uah.edu>

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and that's the whole page, bestie!! this was perl v5.44.0 energy, dated 2026-10-17, filed under Sys::Hostname(3perl) in the Perl Programmers Reference Guide ✨💅 no thoughts, just hostname. iykyk 🎀💖