Is it possible to enter password for sudo only once, and configure it to not require for password on other terminals?

I enter my first sudo command. I enter my password. For a while, I wont have to enter my password for subsequent sudo commands.

Now the question. I am someone who opens a lot of terminals. It would be very convenient if I don't have to enter passwords when I use sudo in the terminals I open after my first sudo, for the short time when I wont have to enter password for sudo in the terminal from which I have used sudo for the first time. (Sorry for the long sentence!)

Is it possible? If not, why? If yes, how?

Solution 1:

Sure it is. Run sudo visudo and add this line to your sudoers file:

Defaults        !tty_tickets

As explained in man sudoers:

 tty_tickets       If set, users must authenticate on a per-tty basis.
                   With this flag enabled, sudo will use a separate record
                   in the time stamp file for each tty.  If disabled, a
                   single record is used for all login sessions.  This
                   flag is on by default.

By setting tty_tickets to off (that's what the ! means), you enable a single authentication to be shared by multiple sessions.