<b>Обязательно валидируйте входные данные.</b>
```
java -cp out ru.fizteh.fivt.students.eltyshev.shell.Program rm
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
	at java.util.ArrayList.rangeCheck(ArrayList.java:604)
	at java.util.ArrayList.get(ArrayList.java:382)
	at ru.fizteh.fivt.students.eltyshev.shell.Commands.RmCommand.executeCommand(RmCommand.java:11)
	at ru.fizteh.fivt.students.eltyshev.shell.Shell.processCommand(Shell.java:75)
	at ru.fizteh.fivt.students.eltyshev.shell.Shell.packageMode(Shell.java:55)
	at ru.fizteh.fivt.students.eltyshev.shell.Shell.start(Shell.java:25)
	at ru.fizteh.fivt.students.eltyshev.shell.Program.main(Program.java:54)
```