Unix
Which command is used to assign only read permission to all three categories of the file 'note'?

chmod go+r note
chmod a-rw
chmod ugo=r note
None of these
chmod u+r,g+r,o-x note

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Unix
The % key allows you

to move the cursor to the first column in the current line
to move the cursor to the upperleft corner of the screen
to move the cursor to a matching delimiter, when a delimiters a parenthesis, a bracket, or a brace.
to move the cursor backward to the beginning of a word

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