I still have problem using the mail command within a script, I just want to send an email with the subject only.
On the command line for eg. :
# cat /etc/hosts |mail -s "Succesfully creatd mksysb for $HOSTNAME" "xxx@email1 yyy@email2" -->works

# mail -s "Succesfully creatd mksysb for $HOSTNAME" "xxx@email1 yyy@email2" -->doesn't work