UpdateCode

function writeFile(dir,data)
    local file = fs.open(dir, "w")
    file.write(data)
    file.close()
    return true
end

function readFile(dir)
    if fs.exists(dir) then
        local file = fs.open(dir,"r")
        local fileData = file.readAll()
        file.close()
        return fileData, true
    else
        return false
    end
end

function update(pastebin,dir)
    resp = http.get("https://pastebin.com/raw/" .. pastebin)

    if resp then
        resp = resp.readAll()

        curFile = readFile(dir)

        if(resp ~= curFile) then
            local succes = writeFile(dir)

            if(succes == true) then
                print("Updated program!")
                error()
            else
                print("Couldn't update, proceeding to run old version...")
            end
        end
    end
end

update("q2SAhS22", shell.getRunningProgram())