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Unix

Unix
Which of the following is not a filter?

None of these
sort
wc
grep

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Unix
Which of the following commands is used to absolutely assign all permissions to the owner, read and write permissions to the group and only executable permission to the others of the file note?

chmod 671 note
chmod 4=rwx, g=rw note
chmod 761 note
chmod 167 note

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Unix
Which of the following is not a communication command.

write
mesg
mail
grep

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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
S
a
A

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Unix
Which command is used to remove the read permission of the file 'note' from both the group and others?

chmod go+r note
chmod go-r note
chmod go-x note
chmod go+rw note

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Unix
Which command is used with vi editor to search a pattern in the forward direction?

?
??
//
/

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