On Mac, how do I give myself permanent sudo privleges?

Not exactly experienced in OSX, but it seems to be located in either one of the following:

• /etc/sudoers
• /private/etc/sudoers

It is recommended that you use visudo to edit the file but you can use another text editor.

Under the line that says root ALL=(ALL) ALL

You add the name of the user and user ALL=(ALL) ALLto give yourself permanent sudo privileges.

You can, of course, edit /etc/sudoers manually to accomplish this.

But Mac OS X's System Preferences has a method built-in to achieve the same thing: Give the user an Administrator account, instead of a Standard account, and it will be added to /etc/sudoers as sudoer automatically (via the wheel group membership).

Users will still need to enter their own password though, which is a good thing ^(tm).

sudo in OSX is exactly like that under Linux, and like Linux man sudo shows the details

sudo determines who is an authorized user by consulting the file /private/etc//sudoers.

/etc is a symbolic link to /private/etc so your suggestion of /etc/sudoers will work.