How to place a file/folder in some folder of "File System"?

The most likely reason you can not make these changes is permissions. You almost certainly have the permissions but need to use these elevated privileges to use them via "sudo" or "gksudo"

There are two options open to you

1. Do it from a command line terminal using the "sudo" command for the commands that need it.

---

2. Open a terminal (CTRL+ALT+T) or run menu (ALT-F2) and enter the following command

gksudo nautilus

The file manager will open. If you have used the terminal do not close the terminal window.

Within the file manager you are now a super user and can make any changes you want. Be careful however, as the system is now trusting that you know what you are doing. If you make the wrong changes you can break your system. Once done close the file manager and, if its open, the terminal window. You are back to being a normal user and again prevented from changing certain parts of the system.

sir,
From your above reply, I understand that as per your suggestion's option # 01 is preferable and safe.
Would you please give me command linse for Unzip the files and place the RS Shuttle X-2010 NASDA folder in celestia extra folder?
thanks in anticipation.
Navin Talati / 25-11-2012

Both methods work and its perfectly acceptable to use the graphical interface but since you have asked for command line instructions. Open a terminal CTRL+ALT +T and enter these one at a time. Copy and paste to avoid typing errors

---------------------------------------------------------
mkdir ~/qazxsw; cd ~/qazxsw
wget www.celestiamotherlode.net/creators/rsanders/Shuttle_X-2010_NASDA.zip
unzip Shuttle_X-2010_NASDA.zip
sudo mv "RS Shuttle X-2010 NASDA" /usr/share/celestia/extras
-------------------------------------------------------

This command will ask for your password there is no feedback but it is being accepted just type and press enter

------------------------------------------------------
cd ..; rm -r qazxsw
-----------------------------------------------------

Sir,
Output of above TWO commands sandwiched between two deshed linse are as under.
------------------------------------------------------------------------------------------------------------------------------------------------------
navin@navin:~$ mkdir ~/qazxsw; cd ~/qazxsw
navin@navin:~/qazxsw$ wget www.celestiamotherlode.net/creators/rsanders/Shuttle_X-2010_NASDA.zip
--2013-07-25 14:14:36-- http://www.celestiamotherlode.net/creators/rsanders/Shuttle_X-2010_NASDA.zip
Resolving www.celestiamotherlode.net (www.celestiamotherlode.net)... 152.19.134.41
Connecting to www.celestiamotherlode.net (www.celestiamotherlode.net)|152.19.134.41|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 272203 (266K) [application/zip]
Saving to: ‘Shuttle_X-2010_NASDA.zip’

100%[======================================>] 2,72,203 83.5KB/s in 3.2s

2013-07-25 14:14:42 (83.5 KB/s) - ‘Shuttle_X-2010_NASDA.zip’ saved [272203/272203]

navin@navin:~/qazxsw$ unzip Shuttle_X-2010_NASDA.zip
Archive: Shuttle_X-2010_NASDA.zip
   creating: RS Shuttle X-2010 NASDA/models/
  inflating: RS Shuttle X-2010 NASDA/models/nasdashuttle.3ds
  inflating: RS Shuttle X-2010 NASDA/ReadMe.txt
  inflating: RS Shuttle X-2010 NASDA/Shuttle.X-2010.NASDA.jpg
  inflating: RS Shuttle X-2010 NASDA/ShuttleX2010NASDA.ssc
   creating: RS Shuttle X-2010 NASDA/textures/
   creating: RS Shuttle X-2010 NASDA/textures/medres/
  inflating: RS Shuttle X-2010 NASDA/textures/medres/Panels5.jpg
  inflating: RS Shuttle X-2010 NASDA/textures/medres/ShutFin.jpg
  inflating: RS Shuttle X-2010 NASDA/textures/medres/ShutHull.jpg
  inflating: RS Shuttle X-2010 NASDA/textures/medres/ShutTail.jpg
  inflating: RS Shuttle X-2010 NASDA/textures/medres/ShutWing.jpg
navin@navin:~/qazxsw$ sudo mv "RS Shuttle X-2010 NASDA" /usr/share/celestia/extras
[sudo] password for navin:
navin@navin:~/qazxsw$
navin@navin:~/qazxsw$
--------------------------------------------------------------------------------------------------------------
navin@navin:~/qazxsw$ cd ..; rm -r qazxsw
navin@navin:~$ cd ..; rm -r qazxsw
rm: cannot remove ‘qazxsw’: No such file or directory
navin@navin:/home$
-------------------------------------------------------------------------------------------------------------------------------------------------------

Please guide further.
Navin Talati /25-7-2013

There seems nothing missing, you should already be able to see "RS Shuttle X-2010 NASDA" inside celestia.

Apparently you have tried executing the last command ("cd ..; rm -r qazxsw") twice, and of course it failed because at the first execution it deleted the qazxsw directory, and repeading the deletion command will fail, because the file/directory is already deleted.

You have to be aware that Linux in most cases just executes a given command, and does not provide any positive confirmation if the command completed successfully. Only if something fails, you will get a response.