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local tArgs = { ... }
local depth = 0
 
if #tArgs ~= 1 then
    print("Usage: rowExcavate <length>")
    return
end
 
length = tonumber(tArgs[1])
os.loadAPI("try")
 
for i = 1,length do
    while try.down() do
        depth = depth + 1
    end
    while depth ~= 0 do
        try.up()
        depth = depth - 1
    end
    if i ~= length then
        if not try.forward() then
            print("Cannot move forward! Exiting script!")
            return
        end
    end
end