问题:单选题What is the output when the following shell script executes?() cat<;<;foobar Hello foobar foobarAThe contents of the file foobar.BHelloCNo output but a file named foobar is created.DHello foobarEHello foobar foobar
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问题:单选题Given the following output: prompt> myapp [1]+ Stopped myapp prompt> Which of the following commands will resume executing the stopped process while allowing the user to continue to type commands at the command prompt?()Abg myappBcontinue myappCexec myappDfg myappEmyapp &
问题:单选题Which of the following commands will change all CR-LF pairs in an imported text file, userlist.txt, to Linux standard LF characters and store it as newlist.txt?()Atr ’/r/n’ < userlist.txt > newlist.txtBtr -c ’/n/r’ < newlist.txt > userlist.txtCtr -d /r¯ < userlist.txt > newlist.txtDtr /r¯/n¯ userlist.txt newlist.txtEtr -s ®^M’¡®^J’ userlist.txt newlist.tx
问题:单选题You wish to kill a process with a PID of 123. Select the command which exiting.()Akill-1 123Bkill-9 123Ckill-15 123Dkill-17 123
问题:填空题What application can be used in place of xhost? Please enter only the name without path. Answer:()
问题:单选题What information is displayed by the command cat/proc/dma?()Awhether DMA is enabledBwhich DMA channels are in useCwhich DMA mode is in useDgeneral information about DMA on the machine
问题:单选题What command will print a list of usernames (first column) and their corresponding user id (uid, third column) from /etc/passwd?()Acut -d: -f 1,3 /etc/passwdBchop -c 1,3 /etc/passwdCtac 1-3/etc/passwdDfmt -u /etc/passwd
问题:填空题Which program finds only files that are in your PATH?()
问题:单选题In xorg.conf, which section is concerned with fonts?()Athe Fonts sectionBthe Files sectionCthe xfsCodes sectionDthe Graphics sectionEthe modeline section
问题:多选题What does the Filesystem Hierarchy Standard enable? ()Asoftware to predict the location of installed files and directoriesBsoftware to predict the ownership and access rights to files and directoriesCusers to predict the location of installed files and directoriesDusers to predict how the filesystem should be formatted according to need
问题:单选题You ran out of space and added a eighth disk to your SCSI-1 system. When you try to start, the system no longer boots. What is most likely the cause of this problem?()ASCSI-1 supports only 8 devices including the adaptor.BSCSI-1 supports only 6 disks per adaptor.CThere is a SCSI-ID conflict that causes that problem.DYou forgot to set the SCSI-ID #8 for the new disk.
问题:填空题USB fax/modems that conform to this subclass of the Communication Device Class (CDC) vendor neutral standard are Linux compatible (answer is a 3 letter acronym).()
问题:单选题Many people like the vi text editor but the default bash command line editor recognizes emacs keystrokes. What command entered into a bash initialization file will have bash recognize vi keystrokes after login?()Ahistory-pviBalias emacs=viCHISTCMD=viDset -o viEunset emacs
问题:单选题You have run out of disk space on a partition. Which of the following would be an easy way to move data to a new partition without reconfiguring the path to the data in existing applications?()ARun ext2fs ACL.BUse a hard link.CUse a symbolic link.DUse the loopback device.ECreate a block device offset.