Problem writing to a file

Hello all. I was trying to create a script that would write strings to a file. I wanted the program itself to be able to utilize arguments to streamline manual control. The program doesn't throw any errors at me, it just refuses to write any strings to the designated file:

the program itself would be called "writer", so I'd type this into the command line…
> writer a file "hello, world!"

local tArgs={...}

function write(path,mode,str)
str=tostring(str) --tostring() functions for redundancy
mode=tostring(mode)
path=tostring(path)
local file=fs.open(path,mode)
file.writeLine(str)
file.close()
end

write(tArgs[2],tArgs[1],tArgs[3])

I was hoping someone might tell me what I'm doing wrong.

Edit: I've updated the post to address Lyqyd's question

Please give us an example command that you are using to invoke the program.

Something like this might work better:

writeFile = function(path, mode, str)
  local path, mode, str = tostring(path), tostring(mode), tostring(str)

  local file = io.open(path, mode)
  file:write(str)
  file:close()
end

Cutecurtain, on 27 November 2013 - 04:27 AM said:

Something like this might work better:

writeFile = function(path, mode, str)
  local path, mode, str = tostring(path), tostring(mode), tostring(str)

  local file = io.open(path, mode)
  file:write(str)
  file:close()
end

Functionally no different than OP's code, except that it makes use of the IO API, which is just an extension of the FS API anyway. I'd say that the problem will definitely be with how the program is being run, which is what Lyqyd has already asked about.

By the by, it's not a good idea to declare a global function called "write" (or any function called "write", for that matter). It'll replace the regular one, likely causing some rather odd results until that computer reboots.