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Unix

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

touch
grep
wc
cat

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Unix
Which command is used with file named 'note' to remove the executable permission from the user and assign read permission to the group and others?

None of these
chmod go+r, u+x note
chmod u-x, go+r note
chmod g-x, uo+r note
chmod go+x, u-x note

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Unix
Which option will be used with sort command to start sorting ofter the nth column of the (m+l)th field?

+(m+l).n
#NAME?
kill
None of these

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Unix
Which command is used to display and create files?

vi
cat
lyrix
ed

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Unix
Which option is used with rm command to make the command prompt the user with each filename and a ?, before acting on it

#NAME?
None of these
-1
-r

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

S
A
a
s

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