The command could not be located because '/sbin' is not included in the PATH environment variable

I have a severe problem today: when I type ifconfig it does not show ip configuration on ubuntu 12.04. Can anyone help me on this?

Here is the result of ifconfig:

Command 'ifconfig' is available in '/sbin/ifconfig'
The command could not be located because '/sbin' is not included in the PATH environment variable.
This is most likely caused by the lack of administrative privileges associated with your user account.
ifconfig: command not found

Solution 1:

You can do either of the following:

• Open your ~/.bashrc file and write the following to the end:

  export PATH=$PATH:/sbin
  

and then do source ~/.bashrc or open a new terminal instance.

• or open your /etc/environment and add /sbin to end of the PATH variable, so that is as follows:

  PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/bin:/usr/games:/sbin"
  

Solution 2:

Add /sbin to the system path by running,

export PATH=$PATH:/sbin

If you follow @nux's answer, you have to create symbolic links for all the command files which are presented inside /sbin directory.But if you follow this or @jobin's answer, you don't need to go for that.