how to invoke a shell function with sudo permission

Question

There is a shell function add_book in my .zshrc. I need to invoke this function with sudo permission. But when I invoke sudo add_book I get the following error:

sudo: add_book: command not found

What can I do?

Answer 1

You can run the program by getting root permission in advanced with this command:

sudo -i

Then run your command when it turns into root@hostname#

Answer 2

# cat /tmp/moo 
function moo { echo moo; }
# unset moo
# type moo 
-bash: type: moo: not found
# sudo -u root bash -c 'source /tmp/moo; moo' 
moo