INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad

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1 INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad COMPUTER SCIENCE AND ENGINEERING TUTORIAL QUESTION BANK Course Name : LINUX PROGRAMMING Course Code : ACS010 Class : III B. Tech II Semester Branch : Computer Science and Engineering Year : Course Coordinator : Dr. R. Obulakonda Reddy, Professor of CSE K. Radhika, Associate Professor, CSE P. Anjaiah, Associate Professor, CSE Course Faculty : S. Swarajya Lakshmi, Associate Professor, CSE COURSE OBJECTIVES (COs): The course should enable the students to: I II III IV V VI Learn the genesis and diversity of both Linux and Unix system utilities. Demonstrate shell scripts in Bourne shell environment. Implement the basics of kernel support for process and multi tasking applications. Demonstrate Linux file systems, signal generation and handling. Demonstrate inter process communication (IPC) and distinguish different concurrent mechanisms. Demonstrate hands-on experience to implement multitasking with TCP/UDP socket system calls. COURSE LEARNING OUTCOMES: Students, who complete the course, will have demonstrated the ability to do the following. S. No Description ACS Learn the importance of Linux architecture along with features. ACS Identify and use Linux utilities to create and manage simple file processing operations ACS Apply the security features on file access permissions by restricting the ownership using advance Linux commands. ACS Implement the SED, GREP and AWK commands for pattern matching and mathematical functions. ACS Understand the shell responsibilities of different types of shells ACS Develop shell scripts to perform more complex tasks in shell programming environment. ACS Illustrate file processing operations such as standard I/O and formatted I/O.

2 ACS Understand process structure, scheduling and management through system calls. ACS Generalize signal functions to handle interrupts by using system calls. ACS Illustrate memory management of file handling through file/region lock ACS Design and implement inter process communication(ipc) in client server environment by using pipe, message queues, named Pipes, ACS Illustrate client server authenticated communication in IPC through semaphores and shared memory. ACS Demonstrate various client server applications on network using TCP or UDP protocols. ACS Design custom based network applications using the Sockets Interface in heterogeneous platforms TUTORIAL QUESTION BANK Blooms S No QUESTIONS taxonomy level UNIT I INTRODUCTION TO LINUX UTILITIES Part - A (Short Answer Questions) Course Outcomes State kernel role in Linux? Remember ACS List different types of shells in Linux Understand ACS Describe compressing of files in Linux. Remember ACS Find the list of files in a directory along with file attributes. Understand ACS Illustrate the vi editor text editing commands? Remember ACS Define hard link and soft link of a file. 7. Compare CP and MV commands. Understand ACS Illustrate moving of files in Linux environment with examples? Remember ACS What is rlogin command purpose? Remember ACS Give the use of telnet command with example? Remember ACS What is ftp and its importance in Unix? Understand ACS Differentiate tar and zip/unzip commands? Remember ACS How to create a file hierarchy using single command in Linux? Remember ACS How to create a new directory in a specific disc location in Linux 14. with example? Understand ACS List the errors while deleting a directory with suitable examples. Remember ACS List Awk operations and describe programming constructs Write a command to print the squares of numbers from 1 to using awk command 18. Write a command to print the line number before each line? 19. Explain the Syntax of Sed Command 20 How to replace word complexsql with word Amit 2 Write a command to delete first line and last line from Sed_file.txt

3 Part - B (Long Answer Questions) Explain Layered architecture and kernel role in Linux with neat Diagram? Compare the comm., comp and diff text processing utilities. 3. Illustrate the file filter commands with examples Remember ACS Remember about links of files and describe about kernel role while creating links. 5. Describe the issues with creating, copying, moving and deleting the directory file in Linux with examples. Remember ACS Discuss on list of commands in sed. Remember ACS Differentiate stream editor and line editor 8. How to create background job and foreground jobs in Linux? 9. Explain about ulimit and, mount commands? Illustrate pg and more command with example? Remember ACS Distinguish between user Defined variables and environment Variables with example? 1 Write a command to find the total number of lines in a file without using NR 1 Write a command to print the second and third line of a file without using NR How to remove blank lines in specific file by using Sed 13. Command? 14. How to print only blank line using Sed Command? 15. Write a command to delete word complexsql from the file. Remember ACS How to print first and last line of the file using Sed Command? 17. Write a command to display 3rd and 5th line from specific file. 18. Write a command to remove the first 10 lines from a file? 19. Write a command to duplicate empty lines in a file? Explain Moving processes to the background and foreground with ACS Understand 20. an example? Write an awk script to find the number of characters, words and 2 lines in a file. Part - C (Problem Solving and Critical Thinking Questions) Differentiate windows and Linux operating system and analyze Important system calls? Remember ACS Illustrate security concepts in both Linux and windows operating Systems? 3. Write a command to print the third field of each line. In the text file, some lines are delimited by colon and some are delimited by space. Write a command to find the sum of bytes (size of file) of all files 4. in a directory. 5. Write a command to print the fields in a text file in reverse order? 6. Write a sed command to print the lines that do not contain the word complex? Understand ACS109.04

4 UNIT II WORKING WITH THE BOURNE AGAIN SHELL (BASH) Part A (Short Answer Questions) Differentiate between a file locking and record locking. Remember ACS Describe any four built in variables in Shell and Demonstrate their usage by example? Understand ACS Write a shell script to display GOOD MRNG, GOOD AFTERNOON, GOOD NIGHT based on system time whenever Remember ACS user logs on. 4. What is the use of here documents? Remember ACS What is Shell Scripting? Remember ACS List some of the common and most widely used UNIX commands. Remember ACS What are the different Types of Shells available? Remember ACS Differentiate symlink ( ) and link() functions with example? Understand ACS Define a system call? Understand ACS List the file types supported by linux. Understand ACS Differentiate system call with library function? Remember ACS Compare dot and dot dot notations in the file system? Remember ACS Distinguish relative path and absolute path. Understand ACS Differentiate hard link and soft link Remember ACS List the significance of fcntl arguments Understand ACS List the file API system calls with purpose Remember ACS Give the list of directory API functions Understand ACS Write the syntax for "if" conditionals in Linux? Understand ACS Discuss three standard streams in Linux Remember ACS Write a command to display PID of current shell. Understand ACS Write a script to print the first 10 elements of Fibonacci series. Remember ACS How are shell variables stored? Explain with a simple example. Remember ACS What are positional parameters? Explain with an example. Remember ACS Part - B (Long Answer Questions) Write a program to create, read and write the contents of directory File Using directory API. Remember ACS Describe about I/O Redirection operations, built in variables in Shell. Understand ACS Explain by writing a script using system time, toshow GOOD Morning, GOOD AFTERNOON, GOODNIGHT. Understand ACS Explain by writing shell script that receives any number of file Understand ACS names as arguments checks if every argument supplied is a file or a 4. directory? 5. Explain how the shell treat a command line passed to it. 6. Write a shell script to find and delete all file with the word Unix". Understand ACS Write a shell script to count the specified number of lines in a text Understand ACS file without using wc command? 8. Demonstrate by writing a shell script to find the factorial of a number. Understand ACS Explain about symlink ( ) function with example? Explain about Understand ACS link( )function with example? 10. Write a program to create, read and write the contents of Ordinary file using file API. Remember ACS Explain about unlink ( ) functions with example? Explain about symlink ( ) functions with example? Remember ACS109.01

5 1 Define a system call? Differentiate system call with library Function? Remember ACS Explain about dot and dot dot directories in the file system? Understand ACS Define symbolic link? Hard link with examples? Understand ACS Differentiate symbolic link instead of a hard link. Understand ACS Define fcntl ( ), read (), write () writen () function with examples? Understand ACS Describe the characteristics of Unix File System. Understand ACS Describe about Low Level File I/O System Calls. Understand ACS Describe usage of dup(), dup2() system calls with example? Understand ACS Define stat () and create () function with examples? Understand ACS Describe open ( ) function in Linux with examples? Understand ACS Differentiate stat ( ), fstat ( ) and lstat() with example? Understand ACS Illustrate about redirection of standard output to file abc.txt Understand ACS Part C (Problem Solving and Critical Thinking) Differentiate file API and standard library functions for file Operations. Understand ACS Emulate the ls command using file API Understand ACS What does the. (dot) indicate at the beginning of a file name and 3. how should it be listed? Understand ACS What are the different blocks of a file system? Explain in brief. Understand ACS Illustrate to read input from the standard input (stdin) and display on the standard output (stdout) using file API. Understand ACS Differentiate and analyze different file creation api functions with Understand ACS example 7. List and briefly describe the functionalities of standard i/o library. Understand ACS UNIT-III PROCESS AND SIGNALS Part - A (Short Answer Questions) What is a process in unix? Remember ACS State process states in unix/ Remember ACS Remember the kernel role on process management Remember ACS List the process attributes Remember ACS Give 5 examples of reliable signals. Remember ACS Describe orphan process with example? Remember ACS What is fork() with example? Understand ACS Define zombie processes with example? Remember ACS Write the differences between threads and processes. Understand ACS Explain process ID of init process? Understand ACS How Can You Get/set An Environment Variable From A Program? Understand ACS What Is An Advantage Of Executing A Process In Background? Understand ACS What Happens When You Execute A Program? Understand ACS What Is ps Command For? Understand ACS Differentiate fork() and vfork() with example? Remember ACS Describe exec () with example? Remember ACS Illustrate exit ( ) function? Understand ACS List all flavors of excec() function. Understand ACS109.08

6 15. Define zombie processes with example? Remember ACS Illustrate calloc( ) and malloc( ) functions? Understand ACS Discuss the two components of the directory file? Remember ACS Distinguish between alarm(), sleep(), pause() functions? Understand ACS Write the difference between reliable and unreliable signals. Understand ACS Explain how to handle signal? Understand ACS Define signal? and explain some examples? Understand ACS Part B (Long Answer Questions) Illustrate about child process creation using fork(), vfork() and Exec() Remember ACS Discuss about orphan process and zombie process with example? Understand ACS What Is A Daemon? and Describe Some of the most common Understand ACS daemons 4. How Can A Parent And Child Process Communicate? Understand ACS What is process table and describe the Process States In Unix? Understand ACS List The System Calls Used For Process Management: Understand ACS How Will You Run A Process In Background? How Will You 7. Bring That Into Foreground And How Will You Kill That Process? Understand ACS Explain how to terminate process normally or abnormally? Understand ACS Write about the kill and raise functions. Remember ACS Differentiate wait () and waitpid() with examples? Remember ACS Explain the mechanism for handling a signal with example? Understand ACS How many ways a process goes to wait state or termination state Understand ACS forcefully 13. Describe SIGKILL and SIGINT with examples? Understand ACS Explain about signal () function? Differentiate the reliable and unreliable signals Remember ACS Elaborate different versions of exec () with examples? Remember ACS Part C (Problem Solving and Critical Thinking) Differentiate and analyze non-blocking IO operations in both ACS Windows and Linux operating systems? Understand Write a program to create a child process and get the processed of ACS child and parent Remember Write a program to find sum of odd numbers by child process and 3. sum of even numbers by parent processes of given range numbers Remember ACS using fork function. 4. Illustrate to redirect the standard input (stdin) and the standard output (stdout) of a process, so that scanf () reads from the pipe and printf ()writes into the pipe? Understand ACS Illustrate by writing c program where process forks to a child, then Waits for someone to terminate? Understand ACS UNIT-IV DATA MANAGEMENT AND INTER PROCESS COMMUNICATION Part A (Short Answer Questions) What is Inter process communication? Understand ACS List the different mechanisms for inter process communication. Remember ACS Describe FIFO concept with example? Remember ACS109.11

7 4. What is the use of FIFO comparing with pipe? Remember ACS Describe mkfifo() system call by example? Remember ACS Describe Pipes opening concept with example? Remember ACS Describe pipes? Explain their limitations. Remember ACS List the message API system calls to create, delete, send and receive Remember ACS Describe the structure of a message Remember ACS Illustrate about IPC_EXEC? Remember ACS Differentiate between kill() and rise()? Remember ACS What is named pipe? Understand ACS Explain about msgtyp with example? Understand ACS Describe IPC _PRIVATE with example? Remember ACS Describe pipe () system call? Remember ACS List the POSIX APIs of semaphores. Remember ACS Part B (Long Answer Questions) Describe message queue API with syntax and example? Remember ACS Differentiate pipe and named pipe concepts in IPC process. Understand ACS Create a pipe to redirect the input of one command to other Command. Remember ACS Create a FIFO to build the communication channel between two processes and give the advantages and disadvantages of Remember ACS Files. Illustrate pipes? Explain their limitations. Explain how named pipes are replaced to overcome the drawback of pipe in IPC with Remember ACS an examples 6. Drawback of message queue with example. Understand ACS Illustrate about V IPC semaphore mechanism with example. Remember ACS Define Semaphore? Write about Semaphore system calls? Understand ACS Write about file locking with Semaphores? Understand ACS Explain about synchronization and How synchronization is 10. Achieved with Semaphores? Understand ACS Explain the structure a shared memory and kernel data structure 1 with a neat diagram? Remember ACS Explain the following functions with syntax: Understand ACS (a) stat() (b) read() (c) open() (d) fstat() Explain about memory management functions malloc(), calloc(), 13. realloc(), free() with suitable example. Remember ACS Define Shared memory? Write about Shared memory system calls? Understand ACS Explain their meaning and illustrate their usage. Write a note on Understand ACS character class. Part C (Problem Solving and Critical Thinking) Demonstrate the priority message queues with example using Understand ACS Message Queue API Illustrate to displays no of messages in queue, last message send, Remember ACS Last? 3. Demonstrate message read time in a given message queue. Remember ACS Demonstrate race conditions with shared memory? Understand ACS109.12

8 5. Write a c program to send and receive message using pipes. Implement two way communication using pipes. Remember ACS UNIT-V SOCKETS Part - A (Short Answer Questions) Demonstrate client and server programming using TCP protocol? Remember ACS Explain about socket( ) function in Linux? Remember ACS Explain about accept( ) function in Linux? Understand ACS Explain about bind( ) function in Linux? Remember ACS Explain about read() function in Linux? Understand ACS Illustrate with a neat diagram about threads, and light weight Remember ACS Processes? 8. Explain about separate kernel stack and light weight processes? Remember ACS Differentiate process and threads? Understand ACS Differentiate stream sockets and raw sockets? Remember ACS Demonstrate client and server programming using UDP protocol? Understand ACS Write primitive is used by server for waiting the client connection? Remember ACS Draw the structure of TCP/IP for exchange information between 13. client and server. Understand ACS List the attributes in socket address functions Remember ACS Distinguish between IPV4 and IPV6. Understand ACS Part - B (Long Answer Questions) Illustrate pthreadcreate ( ) function with examples? Remember ACS Explain pthreadkill ( ) function with example? Remember ACS Illustrate about POSIX APIs of semaphores? Understand ACS Explain thread synchronization with semaphores with example? Remember ACS Illustrate about Semaphores with examples? Remember ACS Explain TCP socket connection establishment with a neat diagram? Remember ACS Explain UCP data transfer with a neat diagram? Understand ACS Demonstrate client and server programming using TCP protocol 8. with Neat diagram? Understand ACS Explain about socket (), listen(), accept( )system calls in Linux? Remember ACS Illustrate about bind (), read(), write() functions in Linux? Remember ACS Explain about sendto () and recvfrom () functions in Linux? Remember ACS Illustrate about TCP NODELAY syntax with a small program? Understand ACS Explain all byte ordering and manipulation functions with Examples? Remember ACS Explain about how TCP connections are established and terminated. Remember ACS Demonstrate echo server and echo client using 6666 port in TCP Remember ACS style? Part C (Problem Solving and Critical Thinking) Illustrate by writing a c program to implement UDP chat client server? Understand ACS Demonstrate client and server programming using UDP protocol ACS Understand with Neat diagram?

9 Illustrate by writing a c program to implement TCP chat client Understand ACS server? Differentiate stream sockets and raw sockets and related system Remember ACS calls? 5. Explain how small and big packets handled in transferring client Understand ACS Server Environment? Prepared By: HOD, CSE