linux input output questions?

Linux input output questions?

Use the following transcript to answer the next 3 questions.

[prince@station prince]$ cal > cal.out

[prince@station prince]$ ls -l /dev/stdin

lrwxrwxrwx 1 root root 17 Apr 1 11:13 /dev/stdin -> ../proc/self/fd/0

[prince@station prince]$ cat /dev/stdin < cal.out

September 2003

Su Mo Tu We Th Fr Sa

1 2 3 4 5 6

7 8 9 10 11 12 13

14 15 16 17 18 19 20

21 22 23 24 25 26 27

28 29 30

8. Which of the following would best describe the file /proc/self?

A. The file is a symbolic link which resolves to the current login shell.

B. The file is a symbolic link which resolves to the root directory.

C. The file is a symbolic link which resolves to /dev/stdout.

D. The file is a symbolic link which resolves to /tmp.

E. The file is a symbolic link which resolves to the /proc/pid directory corresponding to the current process.

9. For the cat process, to what file would the symbolic link /proc/self/fd/0 resolve?

A. /dev/stdin

B. cal.out

C. /dev/tty1

D. /tmp

E. /proc/self

10. For the cat process, to what file would the symbolic link /proc/self/fd/1 most likely resolve?

A. /proc/self

B. /tmp

C. cal.out

D. /dev/stdin

E. /dev/tty1