Remove system information from iostat command output

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I am trying to get some I/O stats about the partitions on the system using iostat command as follows:



iostat -d /dev/sda


The output appears as follows:



Linux 4.10.0-33-generic (test) Tuesday 26 September 2017 _x86_64_ (1 CPU)

Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn
sda 9.35 199.58 70.14 603985 212248


Is there any way to get the output without the first line (which displays all system info)?



I have looked up many places, but could not find this option anywhere. I am not very familiar with Linux commands.










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migrated from stackoverflow.com Sep 26 '17 at 4:01


This question came from our site for professional and enthusiast programmers.


















    up vote
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    down vote

    favorite












    I am trying to get some I/O stats about the partitions on the system using iostat command as follows:



    iostat -d /dev/sda


    The output appears as follows:



    Linux 4.10.0-33-generic (test) Tuesday 26 September 2017 _x86_64_ (1 CPU)

    Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn
    sda 9.35 199.58 70.14 603985 212248


    Is there any way to get the output without the first line (which displays all system info)?



    I have looked up many places, but could not find this option anywhere. I am not very familiar with Linux commands.










    share|improve this question













    migrated from stackoverflow.com Sep 26 '17 at 4:01


    This question came from our site for professional and enthusiast programmers.
















      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I am trying to get some I/O stats about the partitions on the system using iostat command as follows:



      iostat -d /dev/sda


      The output appears as follows:



      Linux 4.10.0-33-generic (test) Tuesday 26 September 2017 _x86_64_ (1 CPU)

      Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn
      sda 9.35 199.58 70.14 603985 212248


      Is there any way to get the output without the first line (which displays all system info)?



      I have looked up many places, but could not find this option anywhere. I am not very familiar with Linux commands.










      share|improve this question













      I am trying to get some I/O stats about the partitions on the system using iostat command as follows:



      iostat -d /dev/sda


      The output appears as follows:



      Linux 4.10.0-33-generic (test) Tuesday 26 September 2017 _x86_64_ (1 CPU)

      Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn
      sda 9.35 199.58 70.14 603985 212248


      Is there any way to get the output without the first line (which displays all system info)?



      I have looked up many places, but could not find this option anywhere. I am not very familiar with Linux commands.







      linux iostat






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      asked Sep 25 '17 at 20:16







      Akshay











      migrated from stackoverflow.com Sep 26 '17 at 4:01


      This question came from our site for professional and enthusiast programmers.






      migrated from stackoverflow.com Sep 26 '17 at 4:01


      This question came from our site for professional and enthusiast programmers.






















          2 Answers
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          You can pipe the standard output of your command to sed to remove the first line. For example:



          iostat | sed '1d'


          If you want to remove the first two lines, the command could be:



          iostat | sed '1d;2d'


          It could also be:



          iostat | sed '1,2d'


          I found a documentation for sed here: https://www.gnu.org/software/sed/manual/sed.html.






          share|improve this answer



























            up vote
            1
            down vote













            A way to do this with just tail:



            iostat -d /dev/sda | tail -n +3


            This removes the first two lines, if you truly only want the first line removed use:



            iostat -d /dev/sda | tail -n +2





            share|improve this answer




















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              2 Answers
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              2 Answers
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              up vote
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              You can pipe the standard output of your command to sed to remove the first line. For example:



              iostat | sed '1d'


              If you want to remove the first two lines, the command could be:



              iostat | sed '1d;2d'


              It could also be:



              iostat | sed '1,2d'


              I found a documentation for sed here: https://www.gnu.org/software/sed/manual/sed.html.






              share|improve this answer
























                up vote
                1
                down vote













                You can pipe the standard output of your command to sed to remove the first line. For example:



                iostat | sed '1d'


                If you want to remove the first two lines, the command could be:



                iostat | sed '1d;2d'


                It could also be:



                iostat | sed '1,2d'


                I found a documentation for sed here: https://www.gnu.org/software/sed/manual/sed.html.






                share|improve this answer






















                  up vote
                  1
                  down vote










                  up vote
                  1
                  down vote









                  You can pipe the standard output of your command to sed to remove the first line. For example:



                  iostat | sed '1d'


                  If you want to remove the first two lines, the command could be:



                  iostat | sed '1d;2d'


                  It could also be:



                  iostat | sed '1,2d'


                  I found a documentation for sed here: https://www.gnu.org/software/sed/manual/sed.html.






                  share|improve this answer












                  You can pipe the standard output of your command to sed to remove the first line. For example:



                  iostat | sed '1d'


                  If you want to remove the first two lines, the command could be:



                  iostat | sed '1d;2d'


                  It could also be:



                  iostat | sed '1,2d'


                  I found a documentation for sed here: https://www.gnu.org/software/sed/manual/sed.html.







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Sep 25 '17 at 20:49







                  YoBa7





























                      up vote
                      1
                      down vote













                      A way to do this with just tail:



                      iostat -d /dev/sda | tail -n +3


                      This removes the first two lines, if you truly only want the first line removed use:



                      iostat -d /dev/sda | tail -n +2





                      share|improve this answer
























                        up vote
                        1
                        down vote













                        A way to do this with just tail:



                        iostat -d /dev/sda | tail -n +3


                        This removes the first two lines, if you truly only want the first line removed use:



                        iostat -d /dev/sda | tail -n +2





                        share|improve this answer






















                          up vote
                          1
                          down vote










                          up vote
                          1
                          down vote









                          A way to do this with just tail:



                          iostat -d /dev/sda | tail -n +3


                          This removes the first two lines, if you truly only want the first line removed use:



                          iostat -d /dev/sda | tail -n +2





                          share|improve this answer












                          A way to do this with just tail:



                          iostat -d /dev/sda | tail -n +3


                          This removes the first two lines, if you truly only want the first line removed use:



                          iostat -d /dev/sda | tail -n +2






                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered Sep 26 '17 at 7:36









                          Hitechcomputergeek

                          38616




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