& and we're creating this slice by taking a reference to an array. In particular, this method can accept a slice containing string slices, i.e. The definition of this method looks a bit complicated, but in fact it is simple: it accepts anything which can be iterated, so that this iteration will yield something to be interpreted as OsStr.

Then, we're passing some arguments to it through the args method on Command.

some command which is interpreted by the shell itself and not as external program. Note that in most cases you don't need this - you can pass the program name to the Command::new directly invoking shell explicitly might be necessary if we're about to use the shell builtin, i.e.

We're on Windows, so we continue for the first if branch.Ĭommand::new requires one argument, which is the command name. In this case, the macro will expand to true on Windows and to false in all other cases. If cfg!(target_os = 'windows') means that we are referring to some compile-time configuration through cfg! macro.

Cmd command