Method add

src/main/java/com/stericson/RootShell/execution/Shell.java:248–270

(Command command)

    public Command add(Command command) throws IOException {
        if (this.close) {
            throw new IllegalStateException(
                    "Unable to add commands to a closed shell");
        }

        if(command.used) {
            //The command has been used, don't re-use...
            throw new IllegalStateException(
                    "This command has already been executed. (Don't re-use command instances.)");
        }

        while (this.isCleaning) {
            //Don't add commands while cleaning
            ;
        }

        this.commands.add(command);

        this.notifyThreads();

        return command;
    }

    public final void useCWD(Context context) throws IOException, TimeoutException, RootDeniedException {
        add(