Linux OS Editors Question:
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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

Linux Editors Interview Question
Linux Editors Interview Question

Answer:

b) sed reads from standard input

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Which sed command deletes the specified address range:
a) [address range]/s
b) [address range]/p
c) [address range]/d
d) [address range]/y
Sed maintains the hold space (a buffer) to:
a) copy the each line of input
b) save the data for later retrieval
c) both (a) and (b)
d) none of the mentioned