mainprog

UNIX[1].shell范例精解(第4版)_code

#!/bin/sh
# Scriptname: mainprog
# This is the main script that will call the function, addon

#datafile=$HOME/bourne/datafile
datafile=./datafile
. dbfunctions      # The dot command reads the dbfunctions file 
                    # into memory
if [ ! -f $datafile ]
then
	echo "`basename $datafile` does not exist" 1>&2
	exit 1
fi
echo "Select one: " 
cat <<EOF
	[1] Add info
	[2] Delete info 
	[3] Exit 

EOF
read choice 
case $choice in
	1) 	addon          # Calling the addon function
		 ;; 
	2) 	delete         # Calling the delete function
		 ;;
	3) 	update 
	 	 ;;
	4) 
		echo Bye 
		exit 0
		 ;; 
	*) 	echo Bad choice
		exit 2
 		 ;;
esac
echo Returned from function call 
echo The name is $name     
# Variable set in the function are known in this shell.