README (390B)
1 os::exec handles the execution of arbitrary commands. A programmer who needs to 2 spawn an external command will usually utilize [[cmd]] to obtain a [[command]] 3 instance (possibly using functions like [[setenv]] to customize it), then 4 [[start]] to execute it and obtain a [[process]] (or, [[exec]] to replace the 5 current process with it), then [[wait]] or [[peek]] to check in on its status.