pv

all

Monitor the progress of data through a pipe.

Options (6)

-s, --sizeboolean

Measure the speed and amount of data flow between pipes (`--size` is optional)

Example: {{command1}} | pv {{[-s|--size]}} {{expected_amount_of_data_for_eta}} | {{command2}}

boolean

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

Example:

pv {{[-cN|--cursor --name]}} in {{path/to/file.txt}} | grep {{pattern}} | pv {{[-cN|--cursor --name]}} out > {{path/to/filtered_file.txt}}

-d, --watchfdboolean

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

Example: pv {{[-d|--watchfd]}} {{PID}}

boolean

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

Example: pv {{[-EE|--skip-errors --skip-errors]}} {{path/to/faulty_media}} > {{path/to/image.img}}

-L, --rate-limitboolean

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

Example: pv {{[-L|--rate-limit]}} {{1K}} {{[-S|--stop-at-size]}} {{maximum_file_size_to_be_read}}

-S, --stop-at-sizeboolean

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

Example: pv {{[-L|--rate-limit]}} {{1K}} {{[-S|--stop-at-size]}} {{maximum_file_size_to_be_read}}

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