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单项选择题 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？（）

A. bg myapp
B. continue myapp
C. exec myapp
D. fg myapp
E. myapp &

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1.单项选择题To allow a regular user account to mount and unmount a filesystem （for instance， a cdrom or floppy）， which option need to be added to the corresponding line in /etc/fstab？（）

A. nouidchk
B. alluser
C. user
D. auto

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2.填空题Which program finds only files that are in your PATH？（）

参考答案：/USR/BINyWHICH

3.多项选择题What does the Filesystem Hierarchy Standard enable？（）

A. software to predict the location of installed files and directories
B. software to predict the ownership and access rights to files and directories
C. users to predict the location of installed files and directories
D. users to predict how the filesystem should be formatted according to need

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4.单项选择题You are looking for an executable file foo. Select the command that would search forfoo within directories set in the shell variable， PATH.（）

A. locate
B. which
C. find
D. query
E. whereis

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5.单项选择题Which of these commands allows you to use shared libraries that are in /usr/local/lib？（）

A. export LD_PRELOAD=/usr/local/lib
B. export LD_LIBRARY_PATH=/usr/local/lib
C. Idconfig /usr/local/lib
D. Idd/usr/local/lib

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6.单项选择题Using vi， you want to save changes to the file myfile with ：w!， but vi complains it cannot write to the file. Therefore， you want to check the write permissions on the file. To do this without leaving vi， you type：（）

A. ：!ls-I myfile
B. ：\ls-l myfile
C. esc ：Is -I myfile
D. ：？ls-l myfile

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7.单项选择题You wish to kill a process with a PID of 123. Select the command which exiting.（）

A. kill-1 123
B. kill-9 123
C. kill-15 123
D. kill-17 123

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8.单项选择题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？（）

A. tr ’\r\n’ " < userlist.txt > newlist.txt
B. tr -c ’\n\r’ " < newlist.txt > userlist.txt
C. tr -d \r¯ < userlist.txt > newlist.txt
D. tr \r¯\n¯ userlist.txt newlist.txt
E. tr -s ®^M’¡®^J’ userlist.txt newlist.tx

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9.单项选择题You have read/write permission on an ordinary file foo. You have just run In foo bar. What would happen if you ran rm foo？（）

A. foo and bar would both be removed.
B. foo would be removed while bar would remain accessible.
C. foo would be removed， bar would still exist but would be unusable.
D. Both foo and bar would remain accessible.
E. You would be asked whether bar should be removed.

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10.填空题What application can be used in place of xhost？ Please enter only the name without path. Answer：（）

参考答案：XAUTH