Phone-book Using Shell Script

Here is the program to create a phonebook using a shell script. It covers the following functionalities.

Display a menu for the following functions

1. Add an entry
2. Display all matches to a string
3. Sort and display the file
4. Delete all the entries that match a given string
5. Exit the program

Using the phonebook, perform the following tasks:

1. Add a new name to a phone book file
2. Display all matches to a name or phone number
3. Sort the phone book by the last name
4. Delete an entry

Program

#!bin/bash
#A phone book application
exit=0
phoneBook="phonebook.txt"
while [ $exit -ne 1 ]
do
echo Select the Operation
printf "1.Add\n2.Display List\n3.Sort and Display\n4.Delete\n5.Exit\n"
printf "Your choice number is: "
read answer
if [ "$answer" -eq 1 ]
then
printf "Enter the first name: "
read fname
printf "Enter the last name: "
read lname
printf "Enter the phone number: "
read number
echo "$fname $lname:$number" >> $phoneBook
elif [ "$answer" -eq 2 ]
then
printf "Enter the option\n1.Dispaly all\n2.Display specific one\n"
printf "Your option is: "
read option
if [ "$option" -eq 1 ]
then
echo The available phone records are:
cat $phoneBook
else
printf "Enter the name or phone number: "
read option
echo The available phone records are:
grep $option $phoneBook
fi
elif [ "$answer" -eq 3 ]
then
printf "1.Sort by firstName\n2.Sort by lastName\n3.Sort by phoneNumber\n"
printf "Enter the corresponding number to sort: "
read pattern
echo The sorted list of phone book by last name:
echo -------------------------------------------
if [ "$pattern" -eq 1 ]
then
sort -t" " -k 1 $phoneBook
echo -------------------------------------------
elif [ "$pattern" -eq 2 ]
then
sort -t" " -k 2 $phoneBook
echo -------------------------------------------
else
sort -t":" -k 2 $phoneBook
echo -------------------------------------------
fi
elif [ "$answer" -eq 4 ]
then
printf "Enter the phoneNumber to delete record: "
read phone
sed -i "/$phone/d" $phoneBook
elif [ "$answer" -eq 5 ]
then
exit=1
else
printf "No such options. Please select again\n"
fi
done
Code language: PHP (php)

You may also like to read:

• What’s the “principal” in Spring Security?
• A Guide to Using Dzongkha Keyboard in macOS
• Understanding the Little Man Computer (LMC): A Beginner’s Guide
• Domain Authority Checkers: Boost Your Website’s Performance
• Getting Started with Flutter: A Beginner’s TODO List