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多项选择题
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
单项选择题
A. locate
B. which
C. find
D. query
E. whereis
单项选择题
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
单项选择题
A. :!ls-I myfile
B. :\ls-l myfile
C. esc :Is -I myfile
D. :?ls-l myfile
单项选择题
A. kill-1 123
B. kill-9 123
C. kill-15 123
D. kill-17 123
单项选择题
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
单项选择题
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.
填空题
单项选择题
A. -remove removes the program, -purge also removes the config files
B. -remove only removes the program, -purge only removes the config files
C. -remove removes a package, -purge also removes all packages dependent on it
D. -remove removes only the package file itself, -purge removes all files related to the package
单项选择题
A. the process id of last background command
B. the exit status of the last command
C. the exit status of the last background command
D. the process id of the current shell
E. the name of the command being executed