perldoc > Sys::Hostname

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🏷️ NAME

Sys::Hostname — Try every conceivable way to get hostname

🚀 Quick Reference

Use Case	Command	Description
Get system hostname (cached)	hostname()	Returns the hostname, caching the result after first call.
Force re-evaluation (by resetting cache)	Sys::Hostname::hostname()	Calling the function again after the first call returns the cached value; to force re‑evaluation, one must reset the internal cache (not shown).

📋 SYNOPSIS

use Sys::Hostname;
$host = hostname;

📖 DESCRIPTION

Attempts several methods of getting the system hostname and then caches the result. It tries the first available of:

• 💻 C library's gethostname()
• ⚙️ $Config{aphostname}
• 🖥️ uname(2)
• 🔬 syscall(SYS_gethostname)
• 🐚 hostname
• 🐚 uname -n
• 📁 /com/host

If all that fails it croaks.

All NULs, returns, and newlines are removed from the result.

👤 AUTHOR

David Sundstrom <sunds AT asictest.com>

Texas Instruments

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

🏷️ NAME 🚀 Quick Reference 📋 SYNOPSIS 📖 DESCRIPTION 👤 AUTHOR