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271 .
Which of the following commands is used to display the filenames in multiple columns?
| A. | ls |
B. | ls -1 |
| C. | ls -x |
D. | lc |
272 .
Which command is used with file named 'note' to remove the executable permission from the user and assign read permission to the group and others?
| A. | chmod u-x, go+r note |
| B. | chmod go+r, u+x note |
| C. | chmod g-x, uo+r note |
| D. | chmod go+x, u-x note |
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