List the names and values of all environment variables or, with name, the value of the environment variable name.
Syntax printenv [name] Options name The name of the environment variable
Some shells may provide a builtin printenv command which is similar or identical to this utility.
“Everything you read in newspapers is absolutely true, except for that rare story of which you happen to have first-hand knowledge” ~ Erwin Knoll
env - Display, set, or remove environment variables.
set - Manipulate shell variables and functions.