Which of the following is the best way to list all defined shell variables?
A.
echo $ENV
B.
env
C.
env a
D.
set
Get 50% Discount on All Your Purchases
at PrepAway.com - Latest Exam Questions
This is ONE TIME OFFER
50%
The ‘set’ command is a shell command that allows a user to set environmental variables. The ‘env’ command will echo all the variables that are set in a user’s environment, however, the -a option does not exist. As for ‘echo $ENV’, this will only display the environmental variable that’s defined for ENV.
B is the correct answer.
0
0