Lua: Prevent carriage return in binary code
file=io.open(filepath,'rb')
file:seek("set")
file:seek("cur",startoffset)
filecontent=file:read(endoffset-startoffset)
io.output(test.tmp)
io.write(filecontent)

local file = assert(io.open(filepath, "rb"), "Could not open file for reading.")
local filecontent = file:read("*a")
file:close()
file = assert(io.open("temp.tmp", "wb"),  "Could not open file for writing.")
file:write(filecontent)
file:close()