单项选择题

Which command will run myscript and redirect stdout and sterr to /tmp/myoutput？（）

A../myscript >> /tmp/myoutput
B../myscript 2>&1 /tmp/myoutput
C../myscript > /tmp/myoutput 2>&1
D../myscript > /tmp/myoutput &1>2

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单项选择题

A user’s print jobs default to PRINTER_A.The user wants to change their default printer to PRINTER_B.How can the system administrator change the user’s default printer to PRINTER_B？（）

A.Execute the command ’piobe -q PRINTER_B’
B.Edit the user’s stanza in the /etc/qconfig file
C.Execute the command ’chuser -a QUEUE=PRINTER_B user’
D.Add the line ’export PRINTER=PRINTER_B’ to the user’s .profile

单项选择题

A 1500 page print job was sent to the "pcl" queue. The job was running for several minutes before it was determined that the job was not needed. What can be done to delete the job？（）

A.kill 201
B.cancel 201
C.disable pcl
D.rm /var/spool/lpd/STDIN.27648

单项选择题

Given the following scripts， what output would be generated？（）

A.The sky is red.
B.The sky is blue.
C.The sky is green.
D.The sky is yellow.