Linux电话本的编写-shell脚本编写

该电话本可以实现以下功能

1.添加用户

2.查询用户

3.删除用户

4.展示用户

5.退出

代码展示：

#!/bin/bash

PHONEBOOK=phonebook.txt

function add_contact() {
echo "Adding new contact..."
read -p "Enter name: " name
read -p "Enter phone number: " number
echo "$name:$number" >> $PHONEBOOK
echo "Contact added successfully."
}

function search_contact() {
echo "Searching for contact..."
read -p "Enter name to search: " search_name
if grep -q "$search_name" $PHONEBOOK; then
grep "$search_name" $PHONEBOOK
else
echo "Contact not found."
fi
}

function list_contacts() {
echo "Listing all contacts..."
if [ -s "$PHONEBOOK" ]; then
cat $PHONEBOOK
else
echo "Phonebook is empty."
fi
}

function delete_contact() {
echo "Deleting contact..."
read -p "Enter name of contact to delete: " del_name
if grep -q "$del_name" $PHONEBOOK; then
sed -i "/$del_name/d" $PHONEBOOK
echo "Contact deleted successfully."
else
echo "Contact not found."
fi
}

function main_menu() {
echo "1. Add Contact"
echo "2. Search Contact"
echo "3. List Contacts"
echo "4. Delete Contact"
echo "5. Exit"
read -p "Enter your choice: " choice
case $choice in

add_contact
main_menu
;;

search_contact
main_menu
;;

list_contacts
main_menu
;;

delete_contact
main_menu
;;

echo "Exiting phonebook program."
exit 0
;;
*)
echo "Invalid choice."
main_menu
;;
esac
}

main_menu