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Comment by dmytrish | Hacker News Reader

Actually, you can send signal USR1 to a GNU `dd` process to see the progress:

    $ pgrep dd
    22230
    $ kill -USR1 22230

- and `dd` prints its progress.

I guess you could pkill directly.

Anyway, this "trick" is mentioned on the man page, which isn't that long. No additional tool required.

Huh, on my laptop (running OSX) it's SIGINFO. Read the man pages!

If you're on OS X, it's SIGINFO instead. SIGUSR1 will kill it D:

(This has caught me out before. Oh how I wish these things were standardised...)

It seems to be a difference between GNU and BSD variants of `dd`.

Yeah, OS X doesn't use the GNU one. It's irritating that there's a difference.