dummyfilescreator 3.0.1

Desktop & CLI tool to generate dummy files

Dummy Files Creator

Application to generate dummy files with random content and different checksums. File units are corresponding powers of 2¹⁰ (KiB, MiB, GiB).

For a bash-based (more performant) solution, see this project.

Usage

Both GUI and CLI modes are available. Note that CLI mode is recommended for creating large datasets.

GUI mode

To use the GUI mode, start dummyfilescreator without arguments. This mode is not recommended for creating large datasets.

CLI mode

Recommended for creating large datasets. The parameters for CLI mode are listed below.

Key	Description
--output / -o	Location where files will be created
--n-files / -n	Number of files to be created
--size / -fs	Size of files to be created
--unit / -fu	Size unit (KiB, MiB, GiB)
--chunk-size / -cs	Chunk size
--chunk-unit / -cu	Chunk size unit (KiB, MiB, GiB)
--log / -l	Saves log file. Affects performance
--hash / -ha	Includes md5 hash in log file. Affects performance
--progressbar / -p	Shows progress bar. Affects performance
--verbose / -v	Shows per-file progress bar. Affects performance

Example:

• Create 5 files of 80 MiB each, show the individual file creation progress, and save the log file with md5 hash to /tmp.

$ dummyfilescreator -o=/tmp -n=5 -fs=80 -fu=MiB -cs=1 -cu=MiB -l=/tmp -ha -v
5 file(s) created in /tmp
Log file saved to /tmp

$ ls /tmp | grep dummy
71bfdea7-f701-40da-97c0-ff0331edd004.dummy
b2c97bc9-159d-41a7-ae8f-55c4d1d2c9ce.dummy
b853d34a-e38d-4f97-8648-9db937ce9a61.dummy
dummy-files-creator.csv
e7149851-0e3a-400f-a929-8ab84b0a0a25.dummy
e9658f26-eb5d-4547-b456-ca2020459f2f.dummy

$ tail -n 1 /tmp/dummy-files-creator.csv
"2022-06-12 22:59:52.213830","80MiB","/tmp/71bfdea7-f701-40da-97c0-ff0331edd004.dummy","442cc4ebbe37cad4025b4bb2049db497"