Watch the progress of 'dd'

dd if=/dev/zero | pv | dd of=/dev/null
Sample Output
1.25GO 0:00:03 [ 434MO/s] [  <=>                                                      ]

9
By: richard
2010-05-14 16:58:42
dd dd pv

4 Alternatives + Submit Alt


  • 12
    dd if=/path/inputfile | pv | dd of=/path/outpufile
    lucafaus · 2010-12-02 18:11:42 2
  • The 'dd' command doesn't provide a progress when writing data. So, sending the "USR1" signal to the process will spit out its progress as it writes data. This command is superior to others on the site, as it doesn't require you to previously know the PID of the dd command. Show Sample Output


    3
    pkill -USR1 ^dd$
    atoponce · 2010-05-14 16:25:01 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
  • dcfldd is a forensic version of dd that shows a process indicator by default.


    1
    dcfldd if=/dev/zero of=/dev/null
    twjolson · 2010-05-14 17:37:03 2

What Others Think

as cool as this is, it relies on a utility that isn't standard across platforms, and isn't installed by default on any system.
atoponce · 422 weeks and 4 days ago
dd if=/dev/zero | pv > /dev/null
dash · 347 weeks and 3 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?

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