Hi
I'm aware that to get environment variable we can use $env(varname) however this require to load pv module first, eg: below:

loadmodule "pv"
#!substdef "/DBRWUSER/$env(DBRWUSER)/g"
#!substdef "/DBRWPW/$env(DBRWPW)/g"

in some case we need to get variable at the beginning (or convenient way or modern application), example:

alias=$getenv(DOMAIN)
listen="$getenv(PRIVATE_IP)" advertise "$getenv(PUBLIC_IP)"

** $getenv just name of new function is similar to $env but not require pv

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