Improve help and fix blank output after reinit

* Add clear to help
* Add off/shutdown to help
* Add reboot/restart to help
* Sort help alphabetically
* Ensure that start.lua is automatically run after
the filesystem is reinitialized in order to prevent
the output buffer from being empty

modules/computers/api.lua

@@ -162,7 +162,7 @@ digicompute.c.forms = {
 	},
 	main = {
 		get = function(pos)
-			local meta     = minetest.get_meta(pos)
+			local meta = minetest.get_meta(pos)
 
 			local last_start = meta:get_int("last_run_start")
 			if last_start == 0 or last_start < meta:get_int("last_boot") then
@@ -254,6 +254,10 @@ digicompute.c.forms = {
 
 				-- Reset Filesystem
 				digicompute.c:reinit(pos)
+
+				-- Rerun start.lua
+				meta:set_int("last_run_start", os.time())
+				digicompute.c:run_file(pos, "os/start.lua")
 			end
 		end,
 	},

octos/exec/help.lua

@@ -4,6 +4,30 @@ local params = ...
 local bin    = get_userdata("bin")
 local param  = params[1]
 
+--[local function] Sort the help list alphabetically
+local function sort(list)
+	-- Order map
+	local map = {["0"] = 1, ["1"] = 2, ["2"] = 3, ["3"] = 4, ["4"] = 5, ["5"] = 6, ["6"] = 7,
+		["7"] = 8, ["8"] = 9, ["9"] = 10, a = 11, b = 12, c = 13, d = 14, e = 15, f = 16, g = 17,
+		h = 18, i = 19, j = 20, k = 21, l = 22, m = 23, n = 24, o = 25, p = 26, q = 27, r = 28,
+		s = 29, t = 30, u = 31, v = 32, w = 33, x = 34, y = 35, z = 36}
+
+	local keys = {}
+	for k in pairs(list) do keys[#keys + 1] = k end
+
+	-- Detect sort order and sort using custom comparison functions
+	table.sort(keys, function(a, b) return map[a:sub(1, 1):lower()] < map[b:sub(1, 1):lower()] end)
+
+	-- Return iterator function
+	local i = 0
+	return function()
+		i = i + 1
+		if keys[i] then
+			return keys[i], list[keys[i]]
+		end
+	end
+end
+
 -- [local function] Print help
 local function print_h(name, info)
 	local cparams = ""
@@ -15,7 +39,7 @@ local function print_h(name, info)
 end
 
 if param == "all" then
-	for name, info in pairs(bin) do
+	for name, info in sort(bin) do
 		print_h(name, info)
 	end
 elseif not param or param == "" then

octos/start.lua

@@ -21,6 +21,11 @@ for _,f in ipairs(bin_contents.files) do
 	}
 end
 
+-- Add additional commands to bin
+bin[get_os("clear")] = { description = "Clear the shell output" } -- Clear shell output
+bin[get_os("off")] = { description = "Turn off computer" } -- Turn off computer
+bin[get_os("reboot")] = { description = "Reboot computer" } -- Reboot computer
+
 -- Save bin table
 set_userdata("bin", bin)