Most of the programs specified in Operating Systems lab for CSE S4 KTU

1. Write a shell script that computes the gross salary of an employee according to the following rules:
   (i) if basic salary is < 1500 then HRA =10% of the basic and DA =90% of the basic.
   (ii) If basic salary is >=1500 then HRA =Rs.500 and DA=98% of the basic
2. Write a shell script to print all armstrong numbers between two numbers.
3. Write a shell script to find smallest of 3 numbers that are read from keyboard.
4. Write a shell script to validate password strength. Here are a few assumptions for the password string:
   Length should be minimum of 8 characters.
   Should contain both small and capital case letters, atleast a digit and an underscore(_).
   If the password doesn't comply with any of the above conditions, then the script should report it as a "Weak Password".
5. Write a shell script that generate all 3 digit numbers that contain only the digits 0, 1, 2, 3.(number does not start with 0)
6. Write a shell script that finds the smallest prime number greater than n which is palindromic.
7. Write a shell script that sort n numbers.
8. Write a shell script that performs linear search.
9. Write a shell script that print the following pattern upto n rows, for a given n.
   1
   2 2
   3 3 3
   4 4 4 4
   .
   .
   n n n n n ..
   
10. Write a shell script that prints the diamond pattern upto n rows, for a given n.
11. To write a shell script that accepts one or more file name as arguments and converts them to uppercase, provided they exist in the current directory.
12. Write a shell script which accepts any number of arguments and prints them in the reverse order.

1. Program to illustrate fork, getpid, exit, wait
2. Program illustrating exec
3. Program illustrating stat
4. Program illustrating opendir, readdir,close

1. Program implementing open, read, write and close

1. Round Robin Scheduling
2. First Come First Serve Scheduling
3. Shortest Job First Scheduling
4. Priority Scheduling

1. Program to write into the memory
2. Program to read from memory

1. Dining Philosophers Problem.
2. Readers Writers Problem.

1. Implement memory allocation for fixed partitions using the following methods:
   First Fit Allocation
   Best Fit Allocation
   Worst Fit Allocation

1. Implement Page Replacement Algorithms:
   FCFS
   LRU
   LFU

1. Implement Banker's Algorithm for Deadlock Avoidance.
2. To implement the deadlock detection algorithm for deadlock detection with resource request.

1. To simulate the disk scheduling algorithms

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