FG
💻 Software

HOSTNAME environment variable on Linux

Fresh7 days ago
Mar 15, 2026147530 views
Confidence Score0%
0%

Problem

On my Linux box (Gentoo Linux 2.6.31 to be specific) I have noticed that the HOSTNAME environment variable is available in my shell, but not in scripts. For example, returns but returns On the other hand, the USER environment variable, for instance, is available both in the shell and in scripts. I …

Error Output

$ echo $HOSTNAME

Unverified for your environment

Select your OS to check compatibility.

1 Fix

Canonical Fix
Unverified Fix
New Fix – Awaiting Verification

Fix for: HOSTNAME environment variable on Linux

Low Risk

is a Bash variable that's set automatically (rather than in a startup file). Ruby probably runs for its shell and it doesn't include that variable. There's no reason you can't export it yourself. You could add the export command to one of your start…

Awaiting Verification

Be the first to verify this fix

Sign in to verify this fix

Environment