A race condition occurs when two or more threads can access shared data and they try to change it concurrently. Because the kernel can swap between threads at any time, you don't know the order in which the threads will attempt to access the shared data. In the following, we will create a program that stores a global variable, global, initialized to 0.We also create two pThreads that attempt to access the shared variable. thread1 is a thread that increments global 90,000,000 times, while thread2 concurrently decrements global the same number of times. 1. What is the expected value of global when both threads have finished executing

When you type the pwd command, you notice that your current location on the linux filesystem is the /usr/local directory. answer the following questions, assuming that your current directory is /usr/local for each question. a. which command could you use to change to the /usr directory using an absolute pathname? b. which command could you use to change to the /usr directory using a relative pathname? c. which command could you use to change to the /usr/local/share/info directory using an absolute pathname? d. which command could you use to change to the /usr/local/share/info directory using a relative pathname? e. which command could you use to change to the /etc directory using an absolute pathname? f. which command could you use to change to the /etc directory using a relative pathname?