Unix Programming Lab

This repository contains solutions for the Unix Programming Lab exercises, categorized into Part A (Shell Scripting) and Part B (C/C++ Programming).

Repository Structure

3rdsemUnixLab/
│-- Part A/   # Shell Scripts
│-- Part B/   # C/C++ Programs
│-- README.md

Unit I: Part A - Shell Scripting

1. Student Database Management: Create and display student details with department-wise frequency.
2. File Comparison & Deletion: Remove the second file if its contents match the first.
3. File Type Checker: Identify if the argument is a file, directory, or something else.
4. Convert Files to Uppercase: Convert the content of given files to uppercase.
5. Compare File Permissions: Check if two files have identical permissions.
6. String Operations:
   • Find length of a string
   • Check if a string is NULL
   • Compare two strings
7. Reverse Command Line Arguments: Print arguments in reverse order.
8. Reverse a Number: Print the reverse of a given number.
9. Fibonacci Series: Print the first 25 Fibonacci numbers.
10. Prime Numbers in a Range: Print prime numbers between a given range.
11. Linear Search: Search for an element in an array using linear search.
12. Find Largest of Three Numbers: Use a function to determine the largest number.

Unit I: Part B - C/C++ Programs

1. Implement UNIX Commands (ln, mv, rm) using APIs.
2. File Handling:
   • Display file contents
   • Copy contents of one file to another
3. Read Every 100th Byte: Read and print every 100th byte from a file.
4. File Information Display: Show file type and Inode details.
5. Process Creation:
   • Using fork() and vfork()
   • Demonstrate Zombie process & avoid it
   • Create an Orphan process
6. Parent Process Handling: Use wait() to catch a child’s exit code.
7. Race Condition Demonstration.
8. UNIX System API Implementation.
9. Signal Handling:
   • Catch, ignore, and accept SIGINT.
10. Inter-Process Communication:
    • Create, write, and read from a pipe
    • Create a parent-child pipe communication

How to Use

1. Run Shell Scripts:

   sh 1.sh

2. Compile and Run C Programs:

   cc program.c
   ./a.out

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Maintained by: Nithish Reddy