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There is a Legacy version here.

Subsist (Untrained)

Source Player Core pg. 232
If you need to provide food and shelter, you can use the Subsist downtime activity. This typically uses Society if you're in a settlement or Survival if you're in the wild.
Item Bonuses for Subsist - Common Items

Skill Uses

[Society] Subsist in a settlement by finding shelter, scrounging, or begging for food.
[Survival] Subsist in the wild by foraging for food and building shelter.

Subsist

Downtime 
Source Player Core pg. 232
You try to provide food and shelter for yourself, and possibly others as well, with a standard of living described on page 295. The GM determines the DC based on the nature of the place where you're trying to Subsist. You might need a minimum proficiency rank to Subsist in particularly strange environments. Unlike most downtime activities, you can Subsist after 8 hours or less of exploration, but if you do, you take a –5 penalty.

Critical Success You either provide a subsistence living for yourself and one additional creature, or you improve your own food and shelter, granting yourself a comfortable living.
Success You find enough food and shelter with basic protection from the elements to provide you a subsistence living.
Failure You're exposed to the elements and don't get enough food, becoming fatigued until you attain sufficient food and shelter.
Critical Failure You attract trouble, eat something you shouldn't, or otherwise worsen your situation. You take a –2 circumstance penalty to checks to Subsist for 1 week. You don't find any food at all; if you don't have any stored up, you're in danger of starving or dying of thirst if you continue failing.