test.lua

tArgs = {...}

if tArgs[1] == nil then
  print("Proper Syntax: scan <filename>")
  return
end

file = fs.open(tArgs[1], "r")
contents = file.readLine()

if string.match(contents, "fs.delete") then
  del = true
end

print("Scan Summary:")

if del == true then
  print("File is trying to delete something")
end