zsync

Download file

$ zsync [path/to/url.zsync]

$ zsync -i [path/to/existing_file] [path/to/url.zsync]

$ zsync -i [path/to/existing_file] -o [path/to/new_file] [path/to/url.zsync]

$ zsync -k [path/to/url.zsync]

$ zsync -q [path/to/url.zsync]

zsync [OPTIONS] URL

zsync is a partial/differential file downloader. It downloads only the changed parts of files using .zsync control files, similar to rsync but over HTTP.
Useful for updating large files like ISO images when only small parts have changed.

-i FILE

Use local file as seed for differential download

Save downloaded file with specified name

Keep partial download files

Quiet mode (no progress)

Override URL in .zsync file

HTTPS not supported - use HTTP URLs only. Requires .zsync control file from server. Server must support range requests.

rsync(1), wget(1), curl(1)