Write generalized bash-shell scripts that are able to work correctly on any Unix/Linux computer, with any user account, and starting from any working directorywithout any modification, to carry out each of the following tasks:c. Phone (phone):Write a shell script (called phone) that creates a simple telephone list (create an empty file called"phonelist" in your home directory: /home/user-name/phonelist). Each line in this file consists oftwo fields: a name and a phone number. The script shall do the following:When the user types the command: “phone -a(name, number) to the list. If the name or the number or both are missing, nothing happens.When the user types the command: "phone -g name" then the script should search in the file"/home/user-name/phonelisť and get and display all (name, number) entries matching thespecified name.3. When the user types the command: “phone -c number1 number2" then the script shouldchange the existing match of numberl in the file “/home/user-name/phonelist" to number2.4.1.name number", this will add a new record2.When the user types the command: “phone -d name number" then the script should deletefrom the file "/home/user-name/phonelisť all existing records that match (name, number).5.When the user types the command: “phone -d name" then the script should delete from thefile “/home/user-name/phonelisť all existing records that have a matching name.6.When the user types the command: “phone -d number" then the script should delete fromthe file "/home/user-name/phonelist" all existing records that have a matching number.7. When the user types the command: "phone" alone, or with no switch then the script shoulddisplay a list of all the (name, number) entries it finds in “/home/user-name/phonelist" file.

Phone (phone): Write a shell script (called phone) that creates a simple telephone list (create an empty file called "phonelist" in your home directory: /home/user-name/phonelist). Each line in this file consists of two fields: a name and a phone number. The script shall do the following: When the user types the command: “phone -a name number", this will add a new record (name, number) to the list. If the name or the number or both are missing, nothing happens. When the user types the command: “phone -g name" then the script should search in the file “/home/user-name/phonelisť and get and display all (name, number) entries matching the 1. 2.

Phone (phone): Write a shell script (called phone) that creates a simple telephone list (create an empty file called "phonelist" in your home directory: /home/user-name/phonelist). Each line in this file consists of two fields: a name and a phone number. The script shall do the following: When the user types the command: “phone -a name number", this will add a new record (name, number) to the list. If the name or the number or both are missing, nothing happens. When the user types the command: “phone -g name" then the script should search in the file “/home/user-name/phonelisť and get and display all (name, number) entries matching the 1. 2.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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