farmLine

-- pastebin run FuQ3WvPs ZSn7ap17 farmLine
local itemName = "obsidian"
print ("Place Fuel in slot 1\n")
print ("Enter item name to farm: ")
itemName = read()
itemName = "minecraft:" .. itemName
print ("Farming " .. itemName .. "...\n")
local distance = 0

while true do
    local _, data = turtle.inspect()
    if data.name ~= itemName then break end

    print ("Distance: " .. tostring(distance) .. "; Fuel: " .. tostring(turtle.getFuelLevel()) .. "\n")
    if turtle.getFuelLevel() == 0 then
        turtle.select(1)
        turtle.refuel()
    end
    turtle.dig()
    turtle.forward()
    distance = distance + 1
end

print ("Going back...\n")
for i = 1, distance, 1 do
    turtle.back()
end

print ("Done\n")