What happens after a foreclosure auction for a comme. property

[Steve Burt]

In Dallas Texas, what happens after a land with commercial building attached is foreclosed on and auctioned off? The foreclosure was for an unpaid line of credit not taxes or anything? How soon would the tenant have to exit and is there anything the tenant could do to stop it or drag it out? What happens to all the inventory and such in the building?

Most info I find is for residential land and those tenants. Not sure how things change for commercial