求助高手十万火急

我们老师布置了一个linux编程题给大家
里面有这样一个要求就是menu里面的
1.       添加系别信息

2.       添加学生信息
这两个文件要同时连接到add里面请问那位告诉能告诉我用何方法可以不发生冲突
本来的写法是这样的
mmmenu里面这样的
    1) tput clear
      sh $add_file
         continue;;
    2) tput clear
       sh $add_file
        continue;;
adadd里面这样的

#ID:0    Name:Zhang qingpeng CNEC1    Number:38
#add_file
#That is the Add New department and the student messages
#
# Define the file varibable
department_file=department
student_file=student
# Display the add menu

#adddepartment(){
while true
#check the user enter number is XX format.if their type is wrong, enter again
do
echo -e "Department Number (XX):\c"
read Department
  case $Department in
    "") echo -e "Department number not entered\n\n";;
    [0-9][0-9])break;;
    *)echo -e "Invalid Department number\n\n";;   
  esac
done
#Enter Department name
while true
#check the user enter last name is only aphabets and spaces.if their type is wrong, enter again
do
echo -e "The department name:\c"
read The
    case $The in
      "") echo -e "The department name not entered\n\n";;
     #*[!\ a-zA-Z]* that means the user can enter only aphabets and spaces.
     *[!\ a-zA-Z]*) echo -e "Last name can contain only aphabets and spaces\n\n";;
     *) break;;
    esac
done
#save the records to student file
echo " Save"
echo -e "$DepartmentThe:">>$department_file
#when the user choose (y)es, add another records again
echo -e "Add another?(y)es or (n)o:\c"
read answer
case "$answer" in
   [yY]|[Yy]es)tput clear;;
        *)exit;sh menu1;;
esac
done
}
#addstudent(){
#student_file=student
while true
#check the user enter number is SXXXXXXX    format.if their type is wrong, enter again
do
echo -e "student ID (SXXXXXXX):\c"
read student
  case $student in
    "") echo -e "studentt ID not entered\n\n";;
    [S][0-9][0-9][0-9][0-9][0-9][0-9][0-9] )break;;
    *)echo -e "Invalid student ID\n\n";;   
  esac
done

#Enter  Name
while true
#check the user enter first name is only aphabets and spaces.if their type is wrong, enter again
do
echo -e " Name:\c"
read Name
    case $Name in
      "") echo -e " Name not entered\n\n";;
     *[!\ a-zA-Z]*) echo -e " Name can contain only aphabets and spaces\n\n";;
     *) break;;
    esac
done
#Enter gender
while true
#check the user enter Middle Init Name is only aphabets and spaces.if their type is wrong, enter #again
do
echo -e "gender:\c"
read gender
    case $gender in
      "") echo -e "gender Init not entered\n\n";;
     *[!\ a-zA-Z]*) echo -e "gender Init can contain only aphabets and spaces\n\n";;
     *) break;;
   esac
done
#Enter birthday
while true
#check the user enter birthday is xxxx-xx-xx format.if their type is wrong, enter again
do
echo -e "Birthday Number (XXXX-XX-XX):\c"
read Birthday
  case $Birthday in
    "") echo -e "Birthday Number not entered\n\n";;
    [1-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9] )break;;
    *)echo -e "Invalid birthday number ID\n\n";;   
  esac
done
#Enter Department name
while true
#check the user enter last name is only aphabets and spaces.if their type is wrong, enter again
do
echo -e "The department name:\c"
read The
    case $The in
      "") echo -e "The department name not entered\n\n";;
     #*[!\ a-zA-Z]* that means the user can enter only aphabets and spaces.
     *[!\ a-zA-Z]*) echo -e "Last name can contain only aphabets and spaces\n\n";;
     *) break;;
    esac
done
#Enter telephone number
while true
#check the user Enter Telephone number is 010-XXXXXXXX format.if their type is wrong, enter again
do
echo -e "Telephone Number (010-XXXXXXXX):\c"
read Telephone
  case $Telephone in
    "") echo -e "Telephone Number not entered\n\n";;
    [0][1][0]-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9])break;;
    *)echo -e "Invalid Telephone Number\n\n";;   
  esac
done

#save the records to student file
echo " Save"
echo -e "studentNamegenderBirthday:$Telephone:">>$student_file
#when the user choose (y)es, add another records again
echo -e "Add another?(y)es or (n)o:\c"
read answer
case "$answer" in
   [yY]|[Yy]es)tput clear;;
        *)exit;sh menu2;;
esac
done
}

#choose(){
#  $choice = $choice $menu_file
  #     if [ "$choice" = "6" ] ; then
   #addmenu1
    #adddepartment
    #else
  #addmenu2
   #addstudent
    #fi

#}
#choose

请请问大家如何解决这个问题的　　　　　　

你的问题是什么？