Updated: 28 December 2022
See https://www.digitalocean.com/community/tutorials/export-command-linux
Export is a built-in command of the Bash shell. It is used to mark variables and functions to be passed to child processes.
Display all exported variables
export
View all exported variables on the current shell
export -p
Declare and export a variable
export STUDENT=Divya
Display a variable
printenv STUDENT
Remove an environment variable
unset STUDENT