Inventory Control Installer

function PrintCentered(sText)
local w, h = term.getSize()
local x, y = term.getCursorPos()
x = math.max(math.floor((w / 2) - (#sText / 2)), 0)
term.setCursorPos(x, y)
print(sText)
end
function writeCentered(sText)
local w, h = term.getSize()
local x, y = term.getCursorPos()
x = math.max(math.floor((w / 2) - (#sText / 2)), 0)
term.setCursorPos(x, y)
print(sText)
end
term.clear()
PrintCentered("Inventory Control Self Installer")
PrintCentered("Loading...")
sleep(3)
p = "server"
if fs.exists("startup") then
disk.eject("bottom")
disk.eject("left")
term.clear()
print("File Already Exists")
print("Restarting")
sleep(2)
os.reboot()
else
term.clear()
PrintCentered("What are you installing?")
writeCentered "Server or Turtle: "
pt = read()
if pt == (p) then
shell.run("label set Inventory Server")
shell.run("pastebin get kiQ9zmjf startup")
disk.eject("bottom")
sleep(2)
os.reboot()
elseif pt == "turtle" then
shell.run("label set Inventory Control")
shell.run("pastebin get xXLEFRiK startup")
disk.eject("left")
sleep(2)
os.reboot()
elseif input ~= "" then
PrintCentered("Error... ")
PrintCentered("You Must Choose Either")
PrintCentered(" Server or Turtle.")
PrintCentered("Pleae Try Your Selection Again")
sleep(5)
os.reboot()
end
end