Linux OS Editors Question:

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

b) save the data for later retrieval
Explanation:
To copy the each line of input, sed maintains the pattern space.

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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	What is sed? a) a non-interactive stream editor b) an IDE c) a hex editor d) none of the mentioned