Unix
Which of the following commands is used to obtain a list of all files by modification time?

ls -i
ls -1
ls -R
ls -t

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Unix
The % key allows you

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

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