XK0-005 Exam Dumps | A file called testfile has both uppercase and lowercase letters: $ cat testfile ABCDEfgH IJKLmnoPQ abcdefgH

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Question 169/192

A file called testfile has both uppercase and lowercase letters:
$ cat testfile
ABCDEfgH
IJKLmnoPQ
abcdefgH
ijklLMNopq
A Linux administrator is tasked with converting testfile into all uppercase and writing it to a new file with the name uppercase. Which of the following commands will achieve this task?

A. tr '(A-Z}' '{a-z}' < testfile > uppercase

B. echo testfile | tr "[Z-A]" "[z-a]" < testfile > uppercase

C. cat testfile | tr '{z-a)' '{Z-A}' < testfile > uppercase

D. tr '[a-z]' '[A-Z]' < testfile > uppercase

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