vxargs provides parallel versions of any arbitrary
command, including ssh, rsync, scp, wget, and
curl. One reason to use it is to control a large
set of machines in a wide-area network or a big
cluster. The main features are parallelism (for
running many jobs at the same time), flexibility,
visualization (users can monitor the total and
per-job progress in a curses-based UI), and
redirection, in which stdout and stderr of each
individual job are redirected to files for further
analysis.
