Ubuntu OS

Allow port 3306 to be accessible externally

edit the /etc/mysql/my.cnf # the bind address which is usurally 127.0.0.1
 

Installing Bittorrent Sync

sh -c 'echo "deb http://linux-packages.getsync.com/btsync/deb btsync non-free" > /etc/apt/sources.list.d/btsync.list'
 
wget -qO - http://linux-packages.getsync.com/btsync/key.asc | sudo apt-key add - 
sudo apt-get update
 
sudo apt-get install btsync

Autostart Bitsync: add "Service btsync start" to the /etc/rc.local file

== How to Use BT sync:==

There’s already a few great tutorials about setting up Btsync in Ubuntu around the web. And below is a brief how-to:

First create a shared folder and set its permissions, here I created a folder shared_folder under the root of my current user:

cd && mkdir shared_folder

sudo chown YOUR_USER:btsync shared_folder

sudo chmod 2775 shared_folder

sudo usermod -a -G btsync YOUR_USER
Then start the btsync service:

sudo service btsync start
You may replace start with stop, enable, disable, or status to control Btsync.

Now go to localhost:8888 in your web browser and add the previous created folder:

Finally share the link, key, or QRcode with your friends and enjoy!

GuruPlug Server

 
Ip is set to DHCP at boot by a script. so even if you edit the /etc/interface file and add Static ip's it will change on reboot. In order to fix this this you need to edit the /etc/ifplugd/ifplugd.action file

and # dhclient3 -e IF_METRIC=100 -pf /var/run/dhclient.eth0.pid -lf /var/lib/dhcp3/dhclient.eth0.leases eth0 

line

Updating Packages in Ubuntu Server

• Update the Package Index: The APT package index is essentially a database of available packages from the repositories defined in the /etc/apt/sources.list file. To update the local package index with the latest changes made in repositories, type the following:

  sudo apt-get update

   

• Upgrade Packages: Over time, updated versions of packages currently installed on your computer may become available from the package repositories (for example security updated). To upgrade your system, first update your package index as outlined above, and then type:

  sudo apt-get upgrade

   

  If a package needs to install or remove new dependencies when being upgraded, it will not be upgraded by the upgrade command. For such an upgrade, it is necessary to use the dist-upgrade command.

  Also, you may upgrade your entire Ubuntu system from one revision to another with dist-upgrade. For example, to upgrade from Ubuntu version 5.10 to version 6.06 LTS, you would first ensure the version 6.06 LTS repositories replace the existing 5.10 repositories in your computer's /etc/apt/sources.list, then simply issue the apt-get update command as detailed above, and finally, perform the actual upgrade by typing:

  sudo apt-get dist-upgrade

   

  After a fairly considerable amount of time, your computer will be upgraded to the new revision. Typically, some post-upgrade steps would be required as detailed in the upgrade notes for the revision you are upgrading to.

  Actions of the apt-get command, such as installation and removal of packages, are logged in the /var/log/dpkg.log log file.

• Remove a Package: Removal of a package or packages is also a straightforward and simple process. To remove the nmap package installed in the previous example, type the following:

  sudo apt-get remove nmap

   

   

  
  Tip: Multiple Packages: You may specify multiple packages to be installed or removed, separated by spaces.

Black Screen on Linux Boot

1- In linux, if the screen goes black because Xorg didn't start, you can still get to a terminal by using ctrl+alt+F1 or F2 etc. F7 I believe is the Xserver. You can do this even while X is running to get back to a plain text terminal. You can also exit X by using ctrl+alt+backspace if it is still operational.

Installing GUI in Ubuntu Server

 

sudo apt-get install ubuntu-desktop

OR

sudo apt-get install kubuntu-desktop

Startx - to start Gui