pi vs swap on flash

[Gene Heskett <gheskett@shentel.net>]

Greetings all;

I have a terabyte drive plugged into a usb port on a pi-3b.
It has a swap partition of 2Gb allocated.

I would like to edit fstab and put swap on this rotating media.

I feel that with the pi's limited memory, this would be a noticeable 
speedup, when apt is doing updates in particular. I've had 200 megs of 
updates take over an hour to complete.

How is this accomplished?

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>