单项选择题

Where is the su log located?（）

A. /var
B. /var/adm
C. /var/perf
D. /var/spool

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单项选择题

Which of the following commands can be used to gain root privileges and profile without initially logging in as root?（）

A. su
B. su root
C. su - root
D. su -c "root"

单项选择题

Which of the following is TRUE about error processing?（）

A.The error daemon runs in the foreground and reads the /etc/errpt file.
B.The error daemon is invoked by the user when required and it reads the /usr/lib/errpt.
C.The error daemon is invoked whenever the error occurs and it reads the /usr/lib/errpt.
D.The error daemon /usr/lib/errdemon runs in the background on most machines and reads the /dev/error special file.

单项选择题

All of the following classes of errors are logged in the error report EXCEPT（）.

A. Messages
B. Software
C. Hardware
D. Unknown