Example: Create a single directory

public static int main (string[] args) {
if (args.length != 2) {
print ("%s NEW-DIRECTORY-NAME\n", args[0]);
return 0;
}

try {
File file = File.new_for_commandline_arg (args[1]);
file.make_directory ();
} catch (Error e) {
print ("Error: %s\n", e.message);
}
return 0;
}

 valac --pkg gio-2.0 GLib.File.make_directory.vala

See: