hugo/docs/content/en/functions/os/Getenv.md

title	linkTitle	description	categories	keywords	menu	function	relatedFunctions	aliases
os.Getenv	getenv	Returns the value of an environment variable, or an empty string if the environment variable is not set.	functions		docs parent functions	aliases returnType signatures getenv string os.Getenv VARIABLE	os.FileExists os.Getenv os.ReadDir os.ReadFile os.Stat	/functions/getenv

Examples:

{{ os.Getenv "HOME" }} → /home/victor
{{ os.Getenv "USER" }} → victor

You can pass values when building your site:

MY_VAR1=foo MY_VAR2=bar hugo

OR

export MY_VAR1=foo
export MY_VAR2=bar
hugo

And then retrieve the values within a template:

{{ os.Getenv "MY_VAR1" }} → foo
{{ os.Getenv "MY_VAR2" }} → bar

With Hugo v0.91.0 and later, you must explicitly allow access to environment variables. For details, review Hugo's Security Policy. By default, environment variables beginning with HUGO_ are allowed when using the os.Getenv function.