snippetbashTip
pv — Monitor the progress of data through a pipe. More information: <https://manned.org/pv>.
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Problem
How to use the
pv command: Monitor the progress of data through a pipe. More information: <https://manned.org/pv>.Solution
pv — Monitor the progress of data through a pipe. More information: <https://manned.org/pv>.Print the contents of the file and display a progress bar:
pv {{path/to/file}}Measure the speed and amount of data flow between pipes (
--size is optional):{{command1}} | pv {{[-s|--size]}} {{expected_amount_of_data_for_eta}} | {{command2}}Filter a file, see both progress and amount of output data:
pv {{[-cN|--cursor --name]}} in {{path/to/file.txt}} | grep {{pattern}} | pv {{[-cN|--cursor --name]}} out > {{path/to/filtered_file.txt}}Attach to an already running process and see its file reading progress:
pv {{[-d|--watchfd]}} {{PID}}Read an erroneous file, skip errors as
dd conv=sync,noerror would:pv {{[-EE|--skip-errors --skip-errors]}} {{path/to/faulty_media}} > {{path/to/image.img}}Stop reading after reading specified amount of data, rate limit to 1K/s:
pv {{[-L|--rate-limit]}} {{1K}} {{[-S|--stop-at-size]}} {{maximum_file_size_to_be_read}}Calculate hash (MD5, SHA1, SHA256, etc) of a large file and show progress:
pv {{path/to/file}} | {{sha256sum}}Code Snippets
Print the contents of the file and display a progress bar
pv {{path/to/file}}Measure the speed and amount of data flow between pipes (`--size` is optional)
{{command1}} | pv {{[-s|--size]}} {{expected_amount_of_data_for_eta}} | {{command2}}Filter a file, see both progress and amount of output data
pv {{[-cN|--cursor --name]}} in {{path/to/file.txt}} | grep {{pattern}} | pv {{[-cN|--cursor --name]}} out > {{path/to/filtered_file.txt}}Attach to an already running process and see its file reading progress
pv {{[-d|--watchfd]}} {{PID}}Read an erroneous file, skip errors as `dd conv=sync,noerror` would
pv {{[-EE|--skip-errors --skip-errors]}} {{path/to/faulty_media}} > {{path/to/image.img}}Context
tldr-pages: common/pv
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