OS Lab

Operating Systems Lab

• OS Lab Syllabus
• Unix Commands – All
• Unix Commands – Frequently Used Commands
• Unix System Calls

• • fork, getpid, getppid
  • exec, exit, wait
  • stat
  • opendir, readdir, closedir
  • open, read, write, close, exit
• Simulation of Unix Commands

1. • ls
   • cat
   • grep
   • wc

• Shell Programming – Control structures
• Shell programming – Index

1. • Find if the given number is odd or even
   • Find if given number is positive, negative or zero
   • Find the greatest among the given three numbers 
   • Perform arithmetic operations
   • Print squares and cubes up to given number
   • Find number of digits in a number
   • Reverse of a number
   • Find the biggest and smallest number in an array
   • Sorting an array of numbers
   • Find the factorial of a given number
   • Find the sum of n numbers

• Scheduling algorithms
  • FCFS
  • SJF
  • Priority
  • Round Robin
• Inter Process Communication
  • Shared Memory
  • Pipes
  • Message Queue
• Process Synchronization – Semaphores
• Thread Synchronization
• Deadlock Detection
• Deadlock Avoidance Bankers Algorithm
• Paging Memory Management
• Page Replacement Algorithms
  • FIFO
  • Optimal
  • LRU
• File Organization – Directory Structure
  • SingleLevel
  • TwoLevel
  • Hierarchical
  • DAG
• File Allocation Techniques
  • Contiguous Allocation
  • Linked Allocation
  • Indexed Allocation
• Memory Allocation Strategies
  • First Fit  Allocation
  • Best Fit  Allocation
  • Worst Fit  Allocation