If no file is specified in sed command then
A. sed command will not work
B. sed reads from standard input
C. sed reads the data already present in buffer
D. it is necessary to provide the filename
Answer: Option B
A. sed command will not work
B. sed reads from standard input
C. sed reads the data already present in buffer
D. it is necessary to provide the filename
Answer: Option B
What command is used to count the total number of lines, words, and characters contained in a file?
A. countw
B. wcount
C. wc
D. count p
E. None of the above
What command is used with vi editor to delete a single character?
A. x
B. y
C. a
D. z
E. None of the above
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