XK0-005 · Question #667
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…
The correct answer is D. tr '[a-z]' '[A-Z]' < testfile > uppercase. This command will use the tr tool to translate all lowercase letters in the testfile to uppercase letters and write the output to the uppercase file. The first argument [a-z]' specifies the set of characters to be replaced, and the second argument [A-Z]' specifies the set of…
Question
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?
Options
- Atr '(A-Z}' '{a-z}' < testfile > uppercase
- Becho testfile | tr "[Z-A]" "[z-a]" < testfile > uppercase
- Ccat testfile | tr '{z-a)' '{Z-A}' < testfile > uppercase
- Dtr '[a-z]' '[A-Z]' < testfile > uppercase
How the community answered
(67 responses)- A10% (7)
- B6% (4)
- C3% (2)
- D81% (54)
Explanation
This command will use the tr tool to translate all lowercase letters in the testfile to uppercase letters and write the output to the uppercase file. The first argument [a-z]' specifies the set of characters to be replaced, and the second argument [A-Z]' specifies the set of characters to replace with. The <' symbol redirects the input from the testfile, and the >' symbol redirects the output to the uppercase file.
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