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Unix

Unix
Which command will be used with vi editor to replace single character under cursor with any number of characters?

s
S
A
a

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Unix
Which option is used with cmp command to give a detailed list of the byte number and the differing bytes in octal for each character that differs in both the files?

-d
-l
-r
None of these
-b

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Unix
Which symbol will be used with grep command to match the pattern pat at the beginning of a line?

$pat
^pat
pat^
pat$

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Unix
Which command will be used with vi editor to insert text to left of cursor?

S
i
a
s

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Unix
While working with mail command, which command is used to save mail in a separate file?

s
r
d
w

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Unix
Which of the following files will displayed by this command cat *ch*

patch
All of these
.ch
catch

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