Hi
Your software is broken by assuming a command can be split up into arguments by spaces, and also not letting the os package properly escape your arguments.
https://github.com/amalfra/oexec/blob/master/oexec.go#L48
Here's a command that would be impossible to execute with your software, notice how the last argument is a single argument:
c := exec.Command(
"/usr/bin/osascript",
"-e",
"say 5")
output, err := c.CombinedOutput()