text: export function getCommand(s){
    const commands = s.split(" ");
    const command = commands[0].toLowerCase();
  
    if( typeof(this.commands[command]) != "undefined"  ){
      this._print( this.commands[command].call( this, commands.slice(1) ) );
    } else if ( commands.length === 1 && commands[0] === "" ){
      this._print( [] );
    } else {
      this._print( [`'${commands[0]}' is not recognized as an internal or external command,<br>operable program or batch file.`] );
    }
  }
  