example02.04

UNIX[1].shell范例精解(第4版)_code

#!/bin/sh 
# The Party Program--Invitations to friends from the "guest" file 
#guestfile=/home/jody/ellie/shell/guests
guestfile=./guests
if [ ! -f "$guestfile" ] 
then
	echo "`basename $guestfile` non-existent"
	exit 1
fi
PLACE="Sarotini's"; 	export PLACE
Time=`date +%H`
Time=`expr $Time + 1`
set cheese crackers shrimp drinks "hot dogs" sandwiches 
for person in `cat $guestfile` 
do
	if [ $person = root ] 
	then
		continue
	else 
	#	mail -v -s "Party" $person <<- FINIS 
		cat <<-FINIS
		Hi ${person}! Please join me at $PLACE for a party! 
		Meet me at $Time o'clock.
		I'll bring the ice cream. Would you please bring $1 and 
		anything else you would like to eat? Let me know if you 				
		can make it. Hope to see you soon.
				    Your pal,
		    ellie@`hostname`
		FINIS
		shift 
		if [ $# -eq 0 ] 
		then
		   set cheese crackers shrimp drinks "hot dogs" sandwiches
		fi
	fi
done		
echo "Bye..."