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

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Unix
The % key allows you

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

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