Operating Systems

Operating Systems

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OS Theory Notes

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Operating Systems Lab 

• OS Lab Syllabus 
• Installing Windows OS
• 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

• ls
• cat
• grep
• wc

• Shell Programming – Control structures
• Shell programming – Index

• 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
• 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
• ContiguousAllocation
• LinkedAllocation
• IndexedAllocation
• Memory Allocation Strategies 
• FirstFit Allocation
• BestFit Allocation
• WorstFit Allocation
• Installing Guest OS using VMware