Start dd and show progress every X seconds

dd if=/path/inputfile | pv | dd of=/path/outpufile

12
By: lucafaus
2010-12-02 18:11:42

2 Alternatives + Submit Alt


  • 9
    dd if=/dev/zero | pv | dd of=/dev/null
    richard · 2010-05-14 16:58:42 2
  • Adjust "sleep X" to your needs. *NOTE: First sleep is required because bash doesn't have a "post-test" syntax (do XXX while). Show Sample Output


    3
    dd if=/path/to/inputfile of=/path/to/outputfile & pid=$! && sleep X && while kill -USR1 $pid; do sleep X; done
    cyrusza · 2010-12-02 15:07:18 3

What Others Think

Tried, it's more smart but slows considerably the copy process (i got 5.5MB/s against 7.6MB/s with the same file).
cyrusza · 406 weeks and 6 days ago
The kill -USR1 variant won't slow down the copy process as it does not introduce two additional pipe copies for each byte.
sashametro · 191 weeks and 5 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

You must be signed in to comment.

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands



Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: