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Unix

Unix
Which of the following commands is used to get directory one level up?

None of these
cd
chdir
cd ..
cd/

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Unix
Which of the following is not a communication command.

mesg
grep
write
mail

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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 is used to terminate a process?

haltsys
shutdown
cancel
kill

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

mail
mesg
write
wall

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Unix
Which of the following options will be used to display number of blocks used by a file?

-r option
#NAME?
None of these
-c

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