《aix系统应用基础》练习题4-权限.pptx

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1、答案：答案：C Which command should be used to permit ONLY the owner to use the script file named savemachine as an executable script?A.chmod 777 savemachineB.chmod -x ./savemachineC.chmod u=rwx,go=savemachineD.chmod go-w+x savemachine答案：答案：D If the current directory was/home/guest,which command would the

2、user execute to list all permissions of all files in all subdirectories of/home/guest?A.ls -lB.ls -RC.ls -alD.ls -alR答案：答案：B How can permissions for the chmod command be written?A.as a hex numberB.in either octal or symbolic notationC.as string of“rwx”to picture the layout of the permissionsD.in the

3、 first line of a file when it is created,and then interpreted by the shell答案：答案：B Which of the following commands should be used to restrict read permissions to ONLY the owner for all files contained in the directory?A.chmod 777 /home/me/mydirB.chmod go-r /home/me/mydir/*C.chmod u+r /home/me/mydir*.

4、*D.chmod 700 /home/me/mydir答案：答案：D After executing the following:chmod 777 dog Which command would verity the results?A.ls -dB.ls -a /C.ls -a dogD.ls -al dog答案：答案：B The mydata file currently has permission bits set at 755.Which of the following commands will take away the execute permission from the group and others?A.chmod 655 mydataB.chmod go-x mydataC.chmod uo-x mydataD.chmod 554 mydata