单项选择题

Which of the following will permit an operator to retrieve console log output from the command line?（）

A. lscons -l
B. cat /var/conslog
C. alog -t console -o
D. lslog /var/adm/conslog

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Which of the following will cancel only job 123 from printer lp01?（）

A. lpstat -d 123 lp01
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D. The ?etc/rc.shutdown?command.