This is part of the Semicolon&Sons Code Diary - consisting of lessons learned on the job. You're in the unix category.
Last Updated: 2024-11-23
The code on your development machine often is dependent on ENV from the parent
process - e.g. PATH, USER, and other variables. These assumptions, when
implicit, can lead to surprises when later deploying.
The following code allows you to remove all inherited ENV variables from parent process and give you a clean slate:
env_hash = {}
system(env_hash, "./frob", unsetenv_others: true)