luajit does support hashbangs

clean

@@ -4,5 +4,5 @@ part="$2"
 
 day="$(printf '%02d' "$day")"
 
-rm -f ./run ./luac.out
+rm -f ./run
 rm -f "day${1}/part${2}.hi" "day${1}/part${2}.o"

day00/part1.lua

@@ -1,3 +1,5 @@
+#!/usr/bin/env luajit
+
 io.input(arg[3])
 local min, max = math.huge, -math.huge
 for i = 1, io.read("*n") do

day01/part1.lua

@@ -1,3 +1,5 @@
+#!/usr/bin/env luajit
+
 local count = 0
 local previous
 for number in io.lines(arg[3]) do

day01/part2.lua

@@ -1,3 +1,5 @@
+#!/usr/bin/env luajit
+
 local count = 0
 local a, b, c
 for line in io.lines(arg[3]) do

day02/part1.lua

@@ -1,3 +1,5 @@
+#!/usr/bin/env luajit
+
 local position, depth = 0, 0
 for line in io.lines(arg[3]) do
 	local split = line:find(" ")

day02/part2.lua

@@ -1,3 +1,5 @@
+#!/usr/bin/env luajit
+
 local position, depth, aim = 0, 0, 0
 for line in io.lines(arg[3]) do
 	local split = line:find(" ")

day03/part1.lua

@@ -1,3 +1,5 @@
+#!/usr/bin/env luajit
+
 local ZERO = string.byte("0", 1)
 local ONE = string.byte("1", 1)
 local total = 0

day03/part2.lua

@@ -1,3 +1,5 @@
+#!/usr/bin/env luajit
+
 local ZERO = string.byte("0", 1)
 local ONE = string.byte("1", 1)
 local lines = {}

day04/part1.lua

@@ -1,3 +1,5 @@
+#!/usr/bin/env luajit
+
 function split(text, sep)
 	local parts = {}
 	local start = 0

day04/part2.lua

@@ -1,3 +1,4 @@
+#!/usr/bin/env luajit
 require("utils")
 
 local f = io.open(arg[3])

day05/part1.lua

@@ -1,3 +1,5 @@
+#!/usr/bin/env luajit
+
 function readline()
 	local x1 = io.read("*n")
 	io.read(1) -- ","

day05/part2.lua

@@ -1,3 +1,4 @@
+#!/usr/bin/env luajit
 require("utils")
 
 function readline()

prepare

@@ -5,7 +5,8 @@ part="$2"
 day="$(printf '%02d' "$day")"
 
 if test -f "day${day}/part${part}.lua"; then
-	luajit -v >/dev/null
+	/usr/bin/env luajit -v >/dev/null
+	cp "day${day}/part${part}.lua" run
 elif test -f "day${day}/part${part}.hs"; then
 	#stack build
 	stack ghc -- -O3 "day${day}/part${part}.hs" -o run

run

@@ -1,5 +0,0 @@
-#!/bin/sh
-day="$1"
-part="$2"
-
-luajit "day${day}/part${part}.lua" "$@"