pv

Monitor the progress of data through a pipe.

=> More information.

• Print the contents of the file and display a progress bar:

pv {file}

• Measure the speed and amount of data flow between pipes (-s is optional):

command1 | pv -s {expected_amount_of_data_for_eta} | command2

• Filter a file, see both progress and amount of output data:

pv -cN in {big_text_file} | grep {pattern} | pv -cN out > {filtered_file}

• Attach to an already running process and see its file reading progress:

pv -d {PID}

• Read an erroneous file, skip errors as dd conv=sync,noerror would:

pv -EE {path/to/faulty_media} > image.img

• Stop reading after reading specified amount of data, rate limit to 1K/s:

pv -L 1K -S {maximum_file_size_to_be_read}

Copyright © 2014—present the tldr-pages team and contributors.

This work is licensed under the Creative Commons Attribution 4.0 International License (CC-BY).

=> CC-BY