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Unix

Unix
Which operator will be used with chmod command to assign absolute permission?

-
%
None of these
+
=

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Unix
Which of the following commands is used to update access and modification times of a file?

wc
cat
touch
grep

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Unix
Which command is used with vi editor to move the cursor to the left?

h
None of these
i
k
j

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Unix
Which of the following commands is used to copy directory structures in and out

cpio
cp
copy
None of these
cp - p

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Unix
In vi editor, forward search is performed using the command.

?pat
:pat
All of these
/pat

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Unix
Which of the following special shell variables is used to process number of the last background job?

$!
$*
$#
$0

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