When I use sudo to run a command, aren't the environment variables visible?

Question

$cat test
export var=value

$source ./test

$cat print.sh
echo $var

$chmod +x print.sh

$echo $var
value

$sudo ./print.sh

I get nothing. I was expecting to see value.

What is going on?

Answer 1

if you want to keep the environment with a sudo, use sudo -E that will preserve environment.

If you need to always preserve some of your environment variables, edit the sudoers file to add lines :

Defaults        env_reset
Defaults        env_keep += "YOURVARIABLE OTHERVARIABLE YETANOTHER"