Creating Global Functions with the Korn Shell

##################################################
# KSH Function: send_email                       
# Author      : Rainer Raab ([email protected])   
# Date        : 11/28/2000                       
##################################################
# Description : Sends an e-mail message to a     
# list of recipients. The message body contains 
# the hostname and timestamp. Lowercase letters 
# are automatically converted to uppercase, to  
# allow for readability on text pagers.         
##################################################
# Usage:
# EMAIL_LIST="email_address1 email_address2 ..."
# EMAIL_SUBJECT="Subject"
# EMAIL_MESSAGE="Message body"
##################################################

function send_email {
         for EMAIL in $EMAIL_LIST; do
SYSTIME=$(date '+%m-%d-%y %H:%M')
SYSHOST=$(hostname)
SUBJECT=$(printf "$EMAIL_SUBJECT"|tr "[:lower:]" "[:upper:]")
printf "$SYSHOST MSG ($SYSTIME): $EMAIL_MESSAGE\n"|tr "[:lower:]" \
  "[:upper:]"|mailx -s " $SUBJECT" $EMAIL
done
}