What is the difference between the following commands?
a. grep “John Doe” Students > /dev/null 2>&1
b. grep “John Doe” Students 2>&1 > dev/null
a. The output of the grep command (the lines in the Students file that contain the string “John Doe”) and error message go to /dev/null.
b. The output of the grep command (the lines in the Students file that contain the string “John Doe”) goes to /dev/null and error message to standard output (the display screen).
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