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单选题
Which of the following commands will change all CR-LF pairs in an imported text file, userlist.txt, to Linux standard LF characters and store it as newlist.txt?()
A

 tr ’/r/n’  < userlist.txt > newlist.txt

B

 tr -c ’/n/r’  < newlist.txt > userlist.txt

C

 tr -d /r¯ < userlist.txt > newlist.txt

D

 tr /r¯/n¯ userlist.txt newlist.txt

E

 tr -s ®^M’¡®^J’ userlist.txt newlist.tx


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