github.com/jbramsden/hugo@v0.47.1/docs/content/en/functions/getenv.md (about)

     1  ---
     2  title: getenv
     3  description: Returns the value of an environment variable.
     4  godocref:
     5  date: 2017-02-01
     6  publishdate: 2017-02-01
     7  lastmod: 2017-02-01
     8  categories: [functions]
     9  menu:
    10    docs:
    11      parent: "functions"
    12  keywords: []
    13  signature: ["getenv VARIABLE"]
    14  workson: []
    15  hugoversion:
    16  relatedfuncs: []
    17  deprecated: false
    18  aliases: []
    19  ---
    20  
    21  Takes a string containing the name of the variable as input. Returns
    22  an empty string if the variable is not set, otherwise returns the
    23  value of the variable. 
    24  
    25  ```
    26  {{ getenv "HOME" }}
    27  ```
    28  
    29  {{% note %}}
    30  In Unix-like environments, the variable must also be exported in order to be seen by `hugo`.
    31  {{% /note %}}