sys info script

Hi,

i need a shell script that write in a file called sys.txt this:

<output of date command>
HN <host name>
OS <OS name> <OS version>

I can have this info with uname command, but I can't write these in sys.txt.

Can any one help me?

Just a two liner:

#!/bin/bash
(date; hostname; uname -sv) > sys.txt

Cheers
rte