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Unix

Unix
Which of the following keys is used to overstrike a whole line?

None of these
u
C
R
v

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Unix
Which commands is used to assign executable permission to all of the files named "letter"?

chmod ugo+x letter
chmod ugo+r letter
chmod u+x letter
chmod ugo+rw letter

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Unix
Which of the following command is used to count just the number of lines contained in a file?

wc -l
None of these
wc -w
wc -r
wc -c

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Unix
Which command is used with vi editor to save file and remain in the editing mode?

q!
:w
:x
None of these
:q

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Unix
Which of are following internal commands is used in mail to forward mail to user in user-list?

m user-list
None of these
d user-list
e user-list
r user-list

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Unix
Which of the following commands is used to assign executable permission to the owner of the file named "note"?

chmod ugo+x note
chmod u+w note
chmod g+x note
chmod u+x note

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