KillProcess

KillProcess[proc] kills the external process represented by the ProcessObject proc.

Examples

Start and kill a process:

proc = StartProcess[{"sleep", "100"}];
KillProcess[proc]

Check process status:

proc = StartProcess[{"ls"}];
KillProcess[proc];
ProcessStatus[proc]
(* "Finished" *)

Please visit the official Wolfram Language Reference for more details.