pam_getenv - get environment variables from /etc/environment

       This tool  will print out the value of env_var from /etc/environment.  It will attempt to expand
       environment variable references in the definition of env_var but will fail if PAM items are expanded.

       The -l option indicates the script should return an environment variable related to default locale
       information.

       The -s option indicates that the script should return an system default environment variable.

       Currently neither the -l or -s options do anything.  They are included because future versions of Debian
       may have a separate repository for the initial environment used by init scripts and for system locale
       information.  These options will allow this script to be a stable interface even in that environment.

Debian GNU/Linux                                   2025-07-03                                      PAM_GETENV(8)

       pam_getenv - get environment variables from /etc/environment

       pam_getenv [-l][-s]env_var