bash：把文件导入内存（引用其他文件的函数）

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

# datafile=$HOME/bourne/datafile
datafile=./datafile
source dbfunctions    # The file is loaded into memory
if [ ! -e $datafile ]
then
 echo "$(basename $datafile) does not exist" >&2
 exit 1
fi

echo "Select one: "
 cat <   [1] Add info
  [2] Delete info
  [3] Update info
  [4] 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.
done