OSY Operating Systems 22516 Micro Project 5th semester MSBTE 

program Name and Code: OSY Operating Systems 22516

Course Name and Code: CS 5I 

Academic Year : 

Semester: Fifth

annexure-I

A MICRO PROJECT ON " Shell Script in Linux/Unix"

1.0   Aims/Benefits of the micro project

An Operating System is basically a system program that controls the execution of application programs and acts as an interface between applications and the computer hardware. It manages the computer system resources to be used in an efficient manner. This course enables one to learn the internal functioning of operating systems and will help in identifying appropriate Operating Systems for given applications/tasks. This course is also a prerequisite for the group of courses included in the 'Cloud Infrastructure Maintenance' Elective group.

2.0   Course outcome addressed.

b. Use operating system tools to perform various functions.

c. Execute process commands for performing process management operations,

d. Apply scheduling algorithms to calculate turnaround time and average waiting time.

e. Calculate the efficiency of different memory management techniques.

f. Apply file management techniques.

3.0 Proposed methodology

In this project, we get information about shell scripting in Linux/Unix.

4.0 Action Plan

Sr. No.	Detail of activity	Plan start date	Plan finish date	Name of responsible team members
1	discuss the project with the  project guide
2	collect information from the internet and textbook
3	collect information from the OSY Operating Systems 22516  reference book
4	arrange all information in ms word
5	Prepare a report on it using MS word
6	print micro project

5.0 Resources used

Sr. no.	Name of resource material	Specifications	Quantity
1	computer	Windows 10	1
2	Internet	Youtube / Wikipedia
3	textbook/manual	OSY Operating Systems 22516	1

annexure-II
Micro-Project Report

A MICRO PROJECT ON "Shell Script in Linux/Unix"

 1.0 Brief Introduction

Shell Scripting is an open-source computer program run by the Unix/Linux shell. Shell Scripting is a program to write a series of commands for the shell to run. It can combine lengthy and repetitive sequences of commands into a single and simple script that can be kept and run anytime which, decreases programming efforts.

This Shell Scripting tutorial aids in learning a basic understanding of the Linux/Unix shell scripting program to develop concepts of Shell Scripting. This Shell Script tutorial is designed for newbies and professionals who want to learn What is Shell Scripting? How shell scripting works, types of shell, and more.

What is Shell?

Shell is a UNIX term for an interface between a user and an operating system service. Shell delivers users with an interface and receives human-readable commands into the system and performs those commands which can run automatically and give the program’s output in a shell script.

An Operating is created of many components, but its two prime components are –

• Kernel
• Shell

A Kernel is at the heart of a computer. It completes the communication between the hardware and software possible. While the Kernel is the innermost part of an operating system, a shell is the outermost one.

Types of Shell

There are two main shells in Linux:

1. The Bourne Shell: The prompt for this shell is $ and its derivatives are listed below:

• POSIX shell also is known as sh
• Korn Shell also known as sh
• Bourne Again SHell also known as bash (most popular)

2. The C shell: The prompt for this shell is %, and its subcategories are:

• C shell also is known as csh
• Tops C shell also is known as tcsh

Steps to Write Shell Script in Linux/Unix

Shell Scripts are written utilizing text editors. On your Linux system, open a text editor program, open a new file to begin typing a shell script or shell programming, then give the shell permission to complete your shell script and put your script at the location from where the shell can locate it.

Let us understand the steps in making a Shell Script:

1. Create a file utilizing a vi editor(or any other editor). Name script file with extension .sh
2. Start the script with #! /bin/sh
3. Write some code.
4. Save the script file as filename.sh
5. For running the script type bash filename.sh

“#!” is an operator named shebang which directs the script to the interpreter's location. So, if we use”#! /bin/sh” the script gets directed to the bourne-shell.

Let’s create a small script –

#!/bin/ah la

steps to create Shell Script Programs in Linux/Unix –

Command ‘ls’ is run when we complete the scrip sample.sh file.

Adding shell comments

Commenting is important in any program. In Shell programming, the syntax to add a comment is

#comment

What are Shell Variables?

Variables store data in the form of characters and numbers. Likewise, Shell variables are utilized to store information and they can be by the shell only.

For example, the following creates a shell variable and then prints it:

variable ="Hello"
echo $variable

Below is a small script that will use a variable.

#!/bin/sh
echo "what is your name?"
read name
echo "How do you do, $name?"
read remark
echo "I am $remark too!"

the steps to create and execute the script

As you see, the program determined the value of the variable ‘name’ as Joy and ‘remark’ as excellent. This is a simple script. You can create advanced scripts which contain conditional statements, loops, and functions. Shell scripting will make your life easy and Linux administration a breeze.

Summary:

• The kernel is the heart of the operating systems, and it communicates between hardware and software
• Shell is a program that interprets user commands through CLI like Terminal
• The Bourne shell and the C shell are the most used shells in Linux
• Linux Shell scripting is writing a series of commands for the shell to execute
• Shell variables store the value of a string or a number for the shell to read
• Shell scripting in Linux can help you make complex programs containing conditional statements, loops, and functions
• Basic Shell Scripting Commands in Linux: cat, more, less, head, tail, mkdir, cp, mv, rm, touch, grep, sort, wc, cut, and, more.

• 2.0  Actual Resources Use

  Sr. no.	Name of resource material	Specifications	Quantity
  1	computer	Windows 10	1
  2	Internet	Youtube/geek for geeks
  3	textbook/manual	OSY Operating Systems 22516	1

  
  

  3.0    Outputs of the Micro-Project

  In this project, we successfully get information about the shell scripting in Linux/Unix. TECHNOLOGIES

  4.0  Skill Developed / Learning outcomes of this Micro-Project

  1. Increase knowledge about shell scripting in Linux/Unix.
  2. Experience teamwork
  3. Increase communication skill
  4. Know about shell scripting in Linux/Unix.

  Conclusion

A shell script is a text file that includes a sequence of commands for a UNIX-based operating system. It is called a shell script because it combines a sequence of commands, that would otherwise have to be typed into the keyboard one at a time, into a single script.

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