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UNIX

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

s
S
i
a

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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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Unix
Which option will be used with ps command to slow the entire command line of the process being run?

-2
-4
-1
#NAME?

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Unix
Which of the following command addresses all users who are currently hooked on?

wall
mesg
mail
write

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