A male UNIX or Network Administrator wearing sandals and sporting a long silvery-grey beard. May be bald, or also have long silvery-grey hair. The length of beard is directly proportional to their Gandalfness.
"Hey, check out that gandalf!" - "Oh him, yeah... he's been to every USENIX conference since Kernighan first presented."
by iambeezly February 01, 2018