Tools to run system processes in the background. It can check if a background
process is running; wait on a background process to finish; get the exit status
of finished processes; kill background processes. It can read the standard
output and error of the processes, using non-blocking connections. 'processx'
can poll a process for standard output or error, with a timeout. It can also
poll several processes at once.

WWW: https://processx.r-lib.org
