Producer Consumer Problem using Shared Memory and Semaphores.
 Program to demonstrate Exec family's system call.
   execl.


 Program to demonstrate pthread- create,sleep,join,exit.
 Program to demonstrate Exec family's system call.
  execv


 Readers-Writer problem using Semaphore.
 Program to demonstrate Exec family
 execlp.


 Dining Philosopher's problem using Semaphores.
 Program to demonstrate Exec family
 execvp


 Echo Server using Pipes.
 Program to show existence of an zombie process.

 Program to demonstrate file related system calls.
   Application:- Make copy of a file
   Program to show usage of signal  
   SIGFPE ii) SIGALRM

 Program to demonstrate file locking using system call.
  Program to show usage of signal  
  SIGNIT ii)SIGQUIT  

 Echo Server using Message Queues.
 Program to demonstrate usage of fork,wait, sleep,getpid, getppid.

 Print type of file for each command line argument.
 Program to show existence of an orphan process.

 Program to printing file attributes for specific descriptor.
  Program to demonstrate Exec family
 (note: execute a user define program)