Only one argument is working

I have a function that create a "label" with text color and background, but works only text color, what is wrong?

function label(x,y,text,colorStr,colorBck)
	    if colorStr ~= nil then
			    term.setTextColor(colorStr)
	    elseif colorBck ~= nil then
			    term.setBackgroundColor(colorBck)
	    end
	    term.setCursorPos(x,y)
	    print(text)
end

Your "elseif" will only be processed if your initial "if" is false.

Oh, I see. Thank you

Another question:
How to use pastebin runs without shell.run()? Shell.run write a string like a: "Connecting to pastebin". Can I run programs without this message?

If your only goal is to hide that message, then your best bet is the window API - create a hidden window and redirect all terminal output to that while running your pastebin downloads.

Eg:

local myHiddenWindow, originalTerm = window.create(term.current(), 0, 0, 1, 1, false), term.current()

term.redirect(myHiddenWindow)

shell.run("pastebin get cUYTGbpb package")
shell.run("pastebin get nKQZwgtv bbtetris")

term.redirect(originalTerm)

Bomb Bloke, on 05 April 2015 - 01:10 PM said:

If your only goal is to hide that message, then your best bet is the window API - create a hidden window and redirect all terminal output to that while running your pastebin downloads.

I'm need not get pastebin, I'm need run. For example, installer.

Well, you're already downloading and saving files without using the pastebin script. All you need to do is shell.run() those programs, yes?

You only get "connecting to pastebin" when running the pastebin script because the pastebin script writes that message. It's not because of shell.run().

Bomb Bloke, on 05 April 2015 - 01:20 PM said:

You only get "connecting to pastebin" when running the pastebin script because the pastebin script writes that message. It's not because of shell.run().

And Can I fix it?

If you want to use "pastebin run", then you can't hide the message pastebin writes without also hiding anything the script you run writes.

But why would you want to do that? Why not just have your script do what the pastebin script does (loadstring the downloaded data and run it as a function), but without writing the message?

A primitive example:

local function pastebin(paste, fileName)
  local file = http.get("http://pastebin.com/raw.php?i="..paste)
  if file then
    local myFunc = loadstring(file.readAll())
    file.close() -- Web handles should be closed too!
    
    setfenv(myFunc, getfenv())
    myFunc()
  else
    error("Pastebin server is not avaible.")
  end
end