• Go to applications-->accessories -->terminal and type the following

           sudo apt-get install ssh

• To use postgresql, create a database instance and a user/role:

             sudo -u postgres createdb $USER

             sudo -u postgres createuser $USER

• Making both database instance and user/role as your login ID lets you to start PostgreSQL client very easily:

                     psql 

• To login as the administrator:

              sudo -u postgres psql
 
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PostgreSQL is a database server based on Opensource.It is well supported and easy to install.
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• Go to terminal and type the followoing to install the application.

        sudo apt-get install samba smbfs

• http://ubuntumanual.org/posts/75/how-to-install-samba-server-for-filefol...
•                    Then go to terminal and type the following

                   sudo cp /etc/samba/smb.conf /etc/samba/smb.conf_backup
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• Read #How to install Samba Server for files/folders sharing service
• To add network user
  • Read #How to add/edit/delete system users

            sudo smbpasswd -a system_username

            gksudo gedit /etc/samba/smbusers 

• Insert the following line into the new file

            system_username = "network username" 

• Make sure your Ubuntu printers are configured properly.Goto applications-->accessories-->terminal and type the following

          sudo cp /etc/samba/smb.conf /etc/samba/smb.conf.backup

          gedit /etc/samba/smb.conf

• Find the following lines in the text editor ...

          # printing = cups
          # printcap name = cups
          ...

          and uncomment them.

          printing = cups
 
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