How to get system BIOS serial number in windows

To the wmic bios get serial number command call the Win32_BIOS wmi class and get the value of the Serial Number property, which retrieves the serial number of the BIOS Chip of your system.

To change IP address using Command Line interface Windows

To change IP address using Command Line interface in Windows 7 use the following example ,

netsh int ipv4 set address name="LAN" address=192.168.14.52 mask=255.255.255.224

netsh int ipv4 add address name="LAN" address=192.168.7.251 mask=255.255.255.0

netsh int ipv4 add address name="LAN" gateway=192.168.14.33 gwmetric=0

netsh int ipv4 set dns name="LAN" source=static addr=192.168.7.254 register=PRIMARY

netsh int ipv4 add dns name="LAN" addr=192.168.5.254 index=2

netsh int ipv4 add dns name="LAN" addr=8.8.8.8 index=3

netsh int ipv4 add dns name="LAN" addr=8.8.4.4 index=4

netsh exit

To run it as a batch file save this file in notepad program as file extension .bat.

HOW REMOVE USB SHORTCUT VIRUS Windows

HOW REMOVE USB SHORTCUT VIRUS

To remove sub shortcut virus you first scan it with antivirus to clean any infected files then type cmd in windows run now type the following commands in DOS,

attrib -h -r -s /s /d X:\*.*, (Where, X is the USB drive letter) and press Enter. 

(For example: If your drive letter is D, then the command is attrib -h -r -s /s /d D:\*.*)

After you run the command , hopefully it has resolved the shortcut problem you need to copy all files to your computer, then format the usb drive. Secondly we need to download and install a usbfix software to solve this problem for that click the following link 

http://www.fosshub.com/UsbFix.html

Thanks! Keep commenting.....

ADD NEW USER IN UBUNTU AND GIVE RIGHTS IN Ubuntu Linux

ADD NEW USER IN UBUNTU AND GIVE RIGHTS


Sign in as root user and then add new user by following steps,

1.  adduser newusername
   
   Give password to newuser
2. To grant access rights use the following command,
   
   sudo visudo
   
   this will give the following script,
   
   root ALL= (ALL:ALL) ALL
   
   
   see the command pattern and add your new user ,

          root ALL= (ALL:ALL) ALL

          newuser ALL= (ALL:ALL) ALL

HOW TO UNLOCK SUPERUSER AND LOGIN AS ROOT IN Ubuntu

HOW TO UNLOCK SUPERUSER AND LOGIN AS ROOT

To unlock root us the following command,

1. sudo password root
   
   you will be asked to enter password root password two times.
2. Then unlock root user by following command
   
   sudo password -u root
3. To lock it again use the following command
   
   sudo password -l root
4. To login as root use the following command
   
   su root
   
   you will be asked for given root password
5. To login interactively use the following command
   
   sudo -i
   
   username:  root
   password : ********
   
   

HOW SET IP OF WLAN INTERFACE UBUNTU 14.04

HOW SET IP OF WLAN INTERFACE UBUNTU 14.04

1. First goto path /etc/network open file by typing
   sudo nano /etc/network/interfaces
    you will see the following,
   
   auto lo
   iface lo inet loopback
   auto eth0
   iface eth0 inet dhcp
   
   Change these settings and add the following line script,
   
   remove the eth0 lines and add wlan0 config commands,
   
   allow-hotplug wlan0
   auto wlan0
   iface wlan0 inet dhcp
   wpa-ssid "MYFI"
   wpa-psk "Passwd"
2. Restart network anagement by typing following command script,
   
   sudo service network-manager restart
   sudo service networking restart
   sudo service resolvconf restart
   
   we can also try commands,
   
   sudo ifacedown wlan0
   sudo ifaceup wlan0
3. If you want to add static wlan ip write the following lines,
   
   allow-hotplug wlan0
   auto wlan0
   iface wlan0 inet static
   address x.x.x.x
   netmask x.x.x.x
   network x.x.x.x
   boradcast x.x.x.x
   gateway x.x.x.x
   wpa-ssid "MYFI"
   wpa-psk "Passwd"
   
   save these configurations in interfaces file.
4. Now after writings command script restart the network management service
   
   sudo service network-manager restart
   sudo service networking restart
   sudo service resolvconf restart
   
   sudo ifacedown wlan0
   sudo ifaceup wlan0
   
   check ip address by ifconfig -a
   
   
   
   
   
   
   
   
   
   

HOW TO SET IP ADDRESS IN UBUNTU 14.04

HOW TO SET IP ADDRESS IN UBUNTU 14.04

To set ip address in ubuntu using terminal we have to do three things.

1. Disable graphical management of network connection edit file use the command sudo gedit /etc/NetworkManager/NetworkManager.conf . Do changes like comment out the line dns=dnsmasq using hash (#) sign. secondly change line which says managed=false to managed=true.
2. Gather information about the static ip (interface, ip to be used , subnet-mask, gateway, DNS). Use the ifconfig -a command to check about the details.
3. Modify network interfaces to be used goto location /etc/network/ edit give details in file interfaces. Use the following command
4. sudo gedit /etc/network/interfaces write the following
   
   auto lo
   iface lo inet loopback
   auto eth0
   iface eth0 inet static
   address x.x.x.x
   netmask x.x.x.x
   gateway x.x.x.x
   dns-nameservers x.x.x.x
5. Restart ubuntu networking services using the following commands,
   
   sudo service network-manager restart
   sudo service networking restart
   sudo service resolvconf restart
   
   This will restart ubuntu network services. you can confirm given ip address using ifconfig command.
6. You can also make network interface up and down using command,
    sudo ifconfig eth0 down
    sudo ifconfig eth0 up
7. To check gateway use the command ip route show
8. To find netmask / subnet use the command ifconfig <iface> | grep mask
9. DNS is like and index used to resolve hostname to an ip address. Use google public DNS ip addresses 8.8.8.8 8.8.4.4 we can use our your router ip if it does dns lookup and gateway router ip address.