Viết phương trình điều khiển đèn led đơn theo yêu cầu sau 8 đèn cổng p1 tắt 2 nhịp một

8 đèn cổng p2 tắt từ 2 bên vào giữa

8 đèn cổng p3 tắt dần từ dưới lên trên

Quá trình lặp lại 3 lần thì dừng lại

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?