Which of the following commands show how the shell handles a specific command?
where

In the vi editor, which of the following commands will copy the current line into the vi buffer?

Which of the following commands will change the quota for a specific user?

Which of the following commands reads a file and creates separate chunks of a given size from the file's contents?

Which of the following characters can be combined with a separator string in order to read from the current input source until the separator string, which is on a separate line and without any trailing spaces, is reached?