A.crontab -l
B.cron -l root
C.lscron -l root
D.cat /var/cron/crontabs/root
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A.0 5 * * 6 /usr/local/bin/myscript
B.0 5 6 * * /usr/local/bin/myscript
C.6 * * 5 0 /usr/local/bin/myscript
D.5 0 Sat * * /usr/local/bin/myscript
A./usr/local/bin/myscript > /dev/null
B./usr/local/bin/myscript < /dev/null
C./usr/local/bin/myscript 2> /dev/null
D./usr/local/bin/myscript 1> /dev/null
A../myscript >> /tmp/myoutput
B../myscript 2>&1 /tmp/myoutput
C../myscript > /tmp/myoutput 2>&1
D../myscript > /tmp/myoutput &1>2
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
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
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.
Given the following scripts， both found in /usr/local/bin， what would the output be when executing /usr/local/bin/script1？（）
A.dog cat
B.dog fish
C.mouse cat
D.mouse fish
A.chmod +s /tmp
B.chmod 775 /tmp
C.chmod 1777 /tmp
D.chmod 4755 /tmp
While installing an application， the administrator is instructed to perform two final tasks prior to starting the application：
1.Set the ownership of a file named ’control_file’ to be owned by the user ’database’ and the group ’appsrvr’.
2.Change the permissions of ’control_file’ to 0766.
After these two tasks have been completed， what will the file permissions look like when ’ls -l control_file’ is executed？（）
A.-rwxrw-rw- 1 database appsrvr 4913 Mar 17 08：24 control_file
B.-rw-r--r-- 1 appsrvr database 4913 Mar 17 08：24 control_file
C.-rw-r--r-- 1 database appsrvr 4913 Mar 17 08：24 control_file
D.-rwxrw-rw- 1 appsrvr database 4913 Mar 17 08：24 control_file
A.chmod -R 775 /stuff
B.chmod -h 002 /stuff
C.chmod -R 577 /stuff
D.chmod ug+rwx，o+rx /stuff
最新试题
A system administrator performs a full backup every Saturday evening and incremental backups the rest of the week. The system failed on Thursday and needs to be restored. Which backup tapes will be required to restore the system to its most recent recoverable state？（）
Which action changes the default editor for ALL users on the system from vi to edit of the following？（）
A system administrator is attempting to restore some files from a backup tape. The restore failed. The system administrator suspects the block size of the tape drive is incorrect. Which of the following commands can be used to determine the block size of the backup tape？（）
In which directory are the basic Linux commands such as gzip， gunzip and zcat installed？（）
Which command will run myscript and redirect stdout and sterr to /tmp/myoutput？（）
A system administrator wants to configure a system so that all new users will be put into the database group by default. How would this be accomplished？（）
How would a system administrator review root’s current cron jobs of the following？（）
A user wants to be permanently added to the dba group. Which command or process can be used to accomplish this？（）
For security reasons， an administrator is asked to modify the system to prevent someone from leaving a terminal logged in. To enable a five minute timeout for all users， what would need to be done to accomplish this task？（）
A system administrator used the savevg command to back up the testvg each night. There is now a requirement to exclude the /test/static filesystem from the backup. How can this be accomplished？（）