11: Which flag to sort causes it to ignore case when sorting (for example, to put 'apple' before Banana")? O-C O No flag needed, this is the default behaviour. O-r O- O-n 12: In "more", what does the "d" key do? Quits the program. O Moves down one-half screenful. O None of the other answers is correct. O Deletes the current screenful from the file. O Moves down one line. 13: What does the notation "foo(1)" mean? Information about "foo" can be found by running "man I foo". Command "foo" requires its arguments be in parentheses. When you type this, the system runs version(1) of the "foo" program. O None of the other answers is correct. O Run "foo" once; "foo(2)" would run the program again its own output 14: What does "more" do? Transforms input characters before passing them to output. Breaks up lots of output into page-size chunks. Selects some lines from the input to pass to the output. Shows only the last few lines of output. None of the other answers is correct. 15: Which flag to sort causes it to sort in descending order? O-C O-1 O No flag needed, this is the default behaviour. O None of the other answers is correct. 16: What would the command 'tr A-ZA-Z' do? Convert any upper-case letters on the input to lower-case letters. O None of the other answers is correct. Convert any lower-case letters on the input to upper-case letters. Convert any numbers on the input to lower-case letters. O Pass the input unchanged. 17: Which filter lets you rearrange the input in a different order? O more Osort Ogrep O None of the other answers is correct. O sed 18: Which flag to sort causes it to suppress duplicate lines? O No flag needed, this is the default behaviour. O-n O-a O- -u 19: Which command, placed at the end of a pipeline, will show the last 25 lines of the output? O head +25 O tail -25 O more +0-25 O head +25-50 None of the other answers is correct. 20: Which sort key below specifies the last field on a line? O-k99,99 O+S O None of the other answers is correct. O-ks.S O Cannot be done using sort alone