Alert via my own test script failed

list Casedj
Sat, 26 May 2007 20:56:05 +0800
Message-Id: <009901c79f95$3ab432e0$661fa8c0@cici>

Following scripts were added  in hobbit-alerts.cfg:
   HOST=linux_1   SERVICE=disk
    SCRIPT          echo "my_linux disk went to warning state" |smbclient -M cici
    SCRIPT          echo "disk reached warning state" |write hobbit 

The color of disk changed while state reached warning level, but scripts had no effect.

Or is syntax of the script wrong? how to write my own alert script?

Thanks very much.

Case