1. According to the Filesystem Heirarchy Standard, what directory trees are considered optional on a system's root filesystem? Choose all that apply.
A. /mnt
B. /root
C. /usr
D. /var
E. /opt
Answer: C, D, E
optional 不是應該是「選項」的嗎?? 那/mnt 不是才不用嗎??
3.Which of the following programs can be used to the find the foo program in the PATH and associated
man pages, but not list every file containing foo on the system?
A. which
B. search
C. slocate
D. where
E. whereis
Answer: A
有搜尋man page 不是應該是whereis 嗎??
