System Alias Manager

local tArg = {...}

function startup()
local file = fs.open("os/Files/Alias.txt","r")
local Text = file.readAll()

local Table = textutils.unserialize(Text)
for i = 1, #Table do
    shell.setAlias(Table[i][2],Table[i][1])
end
file.close()
end

function AddAlias(a,b)
local file = fs.open("os/Files/Alias.txt","r")
local Text = file.readAll()

local Table = textutils.unserialize(Text)
Table[#Table + 1] = {a,b}
file.close()
local Doc = fs.open("os/Files/Alias.txt","w")
Doc.write(textutils.serialize(Table))
Doc.close()
end

function Setup()
local Table = {{"startup/AliasManager.lua","AliasMan"}}
local Doc = fs.open("os/Files/Alias.txt","w")
Doc.write(textutils.serialize(Table))
Doc.close()
end

if tArg[1] == nil then
    startup()
elseif tArg[1] == "setup" then
    Setup()
elseif tArg[1] == "add" then
    AddAlias(tArg[2],tArg[3])
end