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Comment by hackbinary | Hacker News Reader

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ctrl-a (readline command for beginning of line)

type "sudo"

Also, ctrl-w is really useful. Heck, learning the readline editing keyboard in general is really useful.

        $ foo bar baz<cr>
        ^P^A<esc>u
        $ FOO bar baz<cr>

That's three keystrokes less - even for the history (!!) version. :-)

sudo !!