How exactly a 'shutdown -h' “HALT” differ from “normal shutdown” in linux [duplicate]

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  • What's the difference between poweroff and halt? [duplicate]

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Suppose I have 20 process/deqamons running in my linux system,
How different the HALT will have an effect on my process/deamons,
when compared to a normal shutdown..,



*Note:
I need to understand..one of my device proc fails to react for ioctl calls midst while using the shutdown -h command,
But works properly in case of shutdown -r reboot option..,










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marked as duplicate by RalfFriedl, Romeo Ninov, Thomas, John WH Smith, steve Sep 9 at 14:26


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    up vote
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    down vote

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    This question already has an answer here:



    • What's the difference between poweroff and halt? [duplicate]

      2 answers



    Suppose I have 20 process/deqamons running in my linux system,
    How different the HALT will have an effect on my process/deamons,
    when compared to a normal shutdown..,



    *Note:
    I need to understand..one of my device proc fails to react for ioctl calls midst while using the shutdown -h command,
    But works properly in case of shutdown -r reboot option..,










    share|improve this question















    marked as duplicate by RalfFriedl, Romeo Ninov, Thomas, John WH Smith, steve Sep 9 at 14:26


    This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
















      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite












      This question already has an answer here:



      • What's the difference between poweroff and halt? [duplicate]

        2 answers



      Suppose I have 20 process/deqamons running in my linux system,
      How different the HALT will have an effect on my process/deamons,
      when compared to a normal shutdown..,



      *Note:
      I need to understand..one of my device proc fails to react for ioctl calls midst while using the shutdown -h command,
      But works properly in case of shutdown -r reboot option..,










      share|improve this question
















      This question already has an answer here:



      • What's the difference between poweroff and halt? [duplicate]

        2 answers



      Suppose I have 20 process/deqamons running in my linux system,
      How different the HALT will have an effect on my process/deamons,
      when compared to a normal shutdown..,



      *Note:
      I need to understand..one of my device proc fails to react for ioctl calls midst while using the shutdown -h command,
      But works properly in case of shutdown -r reboot option..,





      This question already has an answer here:



      • What's the difference between poweroff and halt? [duplicate]

        2 answers







      linux linux-kernel reboot






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      edited Sep 9 at 7:15









      Rui F Ribeiro

      36.8k1273117




      36.8k1273117










      asked Sep 8 at 17:07









      Kalyan Prakash

      61




      61




      marked as duplicate by RalfFriedl, Romeo Ninov, Thomas, John WH Smith, steve Sep 9 at 14:26


      This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.






      marked as duplicate by RalfFriedl, Romeo Ninov, Thomas, John WH Smith, steve Sep 9 at 14:26


      This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.






















          1 Answer
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          shutdown schedules a time for the system to be powered down. It may be used to halt, power-off or reboot the machine.



          shutdown -h


          is equivalent to : shutdown --poweroff simply it means POWEROFF.



          in the other hand



          shutdown -H


          or



          shutdown --halt


          instructs the hardware to stop all CPU functions, but leaves it powered on. You can use it to get the system to a state where you can perform low level maintenance.
          Note that in some cases it completely shuts down the system. Below are examples of halt






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            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            0
            down vote













            shutdown schedules a time for the system to be powered down. It may be used to halt, power-off or reboot the machine.



            shutdown -h


            is equivalent to : shutdown --poweroff simply it means POWEROFF.



            in the other hand



            shutdown -H


            or



            shutdown --halt


            instructs the hardware to stop all CPU functions, but leaves it powered on. You can use it to get the system to a state where you can perform low level maintenance.
            Note that in some cases it completely shuts down the system. Below are examples of halt






            share|improve this answer
























              up vote
              0
              down vote













              shutdown schedules a time for the system to be powered down. It may be used to halt, power-off or reboot the machine.



              shutdown -h


              is equivalent to : shutdown --poweroff simply it means POWEROFF.



              in the other hand



              shutdown -H


              or



              shutdown --halt


              instructs the hardware to stop all CPU functions, but leaves it powered on. You can use it to get the system to a state where you can perform low level maintenance.
              Note that in some cases it completely shuts down the system. Below are examples of halt






              share|improve this answer






















                up vote
                0
                down vote










                up vote
                0
                down vote









                shutdown schedules a time for the system to be powered down. It may be used to halt, power-off or reboot the machine.



                shutdown -h


                is equivalent to : shutdown --poweroff simply it means POWEROFF.



                in the other hand



                shutdown -H


                or



                shutdown --halt


                instructs the hardware to stop all CPU functions, but leaves it powered on. You can use it to get the system to a state where you can perform low level maintenance.
                Note that in some cases it completely shuts down the system. Below are examples of halt






                share|improve this answer












                shutdown schedules a time for the system to be powered down. It may be used to halt, power-off or reboot the machine.



                shutdown -h


                is equivalent to : shutdown --poweroff simply it means POWEROFF.



                in the other hand



                shutdown -H


                or



                shutdown --halt


                instructs the hardware to stop all CPU functions, but leaves it powered on. You can use it to get the system to a state where you can perform low level maintenance.
                Note that in some cases it completely shuts down the system. Below are examples of halt







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Sep 8 at 19:51









                ablil98

                1




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