05 January 2012

Different ways to Shutdown or Reboot Your Linux System (Ubuntu)

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Different ways to Shutdown or Reboot Your Linux System (Ubuntu)


                                             There are four different methods to shutdown or reboot your Linux System (Ubuntu).

*Shutdown or reboot is an Administrative task , so it require root privileges before you execute these commands.


*In Ubuntu you gain root privilege by writing sudo before any command.


Different ways to Shutdown or Reboot


1. By using init command.


Syntax


                sudo init runlevel
* 0 - halt
* 6 - Reboot


If we write

                    sudo init  0  //shutdown and halt the system ,  it is like shutdown in windows.

                    sudo init 6   //shutdown and reboot the system , it is like restart in windows.


*There are 7 different runlevel in linux from 0 to 6 so don't use other number with init if you are not sure about it.


2. By using shutdown command.

Syntax  


                        shutdown [-option]  time 


Example


                --> sudo shutdown -h now  //shutdown and halt the system ,  it is like shutdown in windows.

now means 0 sec so above command shutdown your system immediately after you typed the command.


* instead of now you can specify time also.


* -h means halt

                  --> sudo shutdown -r now  //shutdown and reboot the system , it is like restart in windows.


* -r means reboot .


3. reboot command : reboot command shutdown and restart the system.

Example
  
                       sudo reboot   //shutdown and reboot the system , it is like restart in windows.


4. halt command :  halt command shutdown and halt the system.


Example
  
                       sudo halt   //shutdown and halt the system , it is like shutdown in windows.


*In Ubuntu  halt -h work same as halt does . 

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1 comment:

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