How things could be solved...

Exercises 2

Assignment 2.1

I'll do what the assignment told me; it might be good to know that "adduser" is interactive (as opposed to "useradd")

Assignment 2.2

Add the user: useradd mrkva
Set the maximum age of the password to 9999 days (anything greather is understood as "infinite"): chage -M 9999 mrkva
Delete and expire the password: passwd -d -e mrkva

Assignment 2.3

Create group 'zelenina': groupadd zelenina
... and 'mrkva' in it: useradd -G zelenina mrkva (similarly for 'kapusta' and 'zajac', but 'zajac' won't be in the group 'zelenina').
I know how to create directory /home/zahrada, right?

I'll set it (using chmod, chown) so it will look like this:

drwxrwx---    2 root     zelenina     1024 Apr  1 00:00 /home/zahrada

If 'zajac' wants to (temporarily) become a member of 'zelenina', and also have an access to 'zahrada', it can use sg zahrada

Assignment 2.4

Nothing more to say.

Assignment 2.5

I can create a file, right? ;)
Directory gets permission 'x' for the 'others', so anyone can enter the directory, but can't read its contents. It will look like this:
```
drwxrwx--x    3 root     zelenina     1024 Apr  1 00:00 /home/zahrada
```

File gets permissions 'rw' for everyone, so they can edit it:

-rw-rw-rw-    3 root     zelenina        0 Apr  1 00:00 /home/zahrada/foliovnik

Assignment 2.47

Aplikaciou znalosti ziskanych na zakladnej skole zistime, ze onym korenom je mrkva. By application of elementary school knowledge we'll find out that the only possible root is carrot (mrkva:)