How to print / echo environment variables?

Question

How do I print an environment variable just being set?

NAME=sam echo "$NAME" # empty

I found that eval works. Is it the correct way?

NAME=sam eval 'echo $NAME' # => sam

Answer 1

These need to go since different commands e.g.:

NAME=sam; echo "$NAME"

NAME=sam && echo "$NAME"

The extension $NAME to empty string is done by using the shell earlier, before running the echo, Both the NAME variable is passed to this echo command's environment, the expansion is already done (to null string).

To get same result, in 1 command:

NAME=sam printenv NAME

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