Find a folder size in Ubuntu

Code:

du -chs Folder-path

Change date in Ubuntu from command line

For instance, to set the date/time for May 19th, 2007, 6:00pm (and 0 seconds), you would type:

Code:

date 051918002007.00

Establishing a Secure Remote Desktop Session

Once the SSH server is installed and active it is time to move to the other system. At the other system, log in to the remote system using the following command, which will establish the secure tunnel between the two systems:

 ssh -L 5900:localhost:5900 hostname

In the above example, hostname is either the hostname or IP address of the remote system. Log in using your account and password. The secure connection is now established and it is time to launch vncviewer so that it uses the secure tunnel. Leaving the ssh session running in the other terminal window, launch another terminal and enter the following command:

vncviewer localhost::5900

The vncviewer session will prompt for a password if one is required, and then launch the VNC viewer providing secure access to your desktop environment.

Run windows applications in Ubuntu

First, open a terminal window. Then add the repository's key to your system's list of trusted APT keys by copy and pasting the following:

wget -q http://wine.budgetdedicated.com/apt/387EE263.gpg -O- | sudo apt-key add -

For Ubuntu Feisty (7.04):
sudo wget http://wine.budgetdedicated.com/apt/sources.list.d/feisty.list -O /etc/apt/sources.list.d/winehq.list

then:

apt-get install wine

for run application:

wine Application-Name

More Information: http://www.winehq.org

Activate 3D Desktop in Ubuntu

1. Open a terminal window, type:

Code:

sudo apt-get install 3ddesktop

press enter

2. 3ddesktop should be installed.

3. you can type 3ddesk and press enter (normal user) in terminal to run this. (Use arrow keys to change desktops, enter to select that desktop)

How to make a desktop launcher for 3d desktop:

1.Right click on an empty area in the taskbar, and click "add to panel"
2. Double click "custom application launcher"
3. Name: 3D Desktop changer
Comment: My cool 3D Desktop changer (or whatever you like)
Command: 3ddesk
Make sure you have "run in terminal" unchecked.
If you want, you can select an icon by clicking on "no icon" button.
4. CLick OK

To run 3ddesktop switcher, just click on the icon you just made on the panel.

Enable ACL in Ubuntu

for /samba partition:

# mount –o remount,acl /samba

To permanently enable ACL support, add acl after the defaults option in /etc/fstab:

/dev/mapper/VolGroup00-SambaVol /samba ext3 defaults,acl 0 0

Change monitor refresh rate in Ubuntu

If you have a non-standard setup you might be forced to do some manual
configuration. Edit /etc/X11/xorg.conf to do that.

What you want to change is the HorizSync and VertRefresh values in the
Monitor section. Here is an example from setup.

Section "Monitor"
      Identifier   "SyncMaster 975p"
      VendorName   "SAMSUNG"
      ModelName    "SyncMaster 975p"
      HorizSync    30-96 <===============        VertRefresh  50-160 <===============        DisplaySize  361 271        Option       "DPMS" EndSection