How can I use `--lines` `--row` modifiers in `ps` command












4














I often used the following command,



ps -eo pid,cmd,pcpu,pmem --sort=-pcpu | head


But in the man page I saw the following to output modifiers,



   --lines n
Set screen height.
--rows n
Set screen height.


As if these modifiers can limit row height then I don't have to use any kind of piping which gives me a bit comfort on writing scripts with python subprocess.



But I have no idea how can I use them. As I have already tried adding them at the end of the command.










share|improve this question





























    4














    I often used the following command,



    ps -eo pid,cmd,pcpu,pmem --sort=-pcpu | head


    But in the man page I saw the following to output modifiers,



       --lines n
    Set screen height.
    --rows n
    Set screen height.


    As if these modifiers can limit row height then I don't have to use any kind of piping which gives me a bit comfort on writing scripts with python subprocess.



    But I have no idea how can I use them. As I have already tried adding them at the end of the command.










    share|improve this question



























      4












      4








      4







      I often used the following command,



      ps -eo pid,cmd,pcpu,pmem --sort=-pcpu | head


      But in the man page I saw the following to output modifiers,



         --lines n
      Set screen height.
      --rows n
      Set screen height.


      As if these modifiers can limit row height then I don't have to use any kind of piping which gives me a bit comfort on writing scripts with python subprocess.



      But I have no idea how can I use them. As I have already tried adding them at the end of the command.










      share|improve this question















      I often used the following command,



      ps -eo pid,cmd,pcpu,pmem --sort=-pcpu | head


      But in the man page I saw the following to output modifiers,



         --lines n
      Set screen height.
      --rows n
      Set screen height.


      As if these modifiers can limit row height then I don't have to use any kind of piping which gives me a bit comfort on writing scripts with python subprocess.



      But I have no idea how can I use them. As I have already tried adding them at the end of the command.







      ps






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Dec 13 '18 at 12:12









      Jeff Schaller

      39k1053125




      39k1053125










      asked Dec 13 '18 at 11:05









      muhammad

      546515




      546515






















          1 Answer
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          9














          The screen height doesn’t limit the total output, it determines how often the header is repeated (if requested):



          ps -eo pid,cmd,pcpu,pmem --sort=-pcpu --lines=20 --header


          will repeat the header every twenty lines (so you’ll get a header, nineteen lines of output, a header, etc.).






          share|improve this answer





















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            1 Answer
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            active

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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            9














            The screen height doesn’t limit the total output, it determines how often the header is repeated (if requested):



            ps -eo pid,cmd,pcpu,pmem --sort=-pcpu --lines=20 --header


            will repeat the header every twenty lines (so you’ll get a header, nineteen lines of output, a header, etc.).






            share|improve this answer


























              9














              The screen height doesn’t limit the total output, it determines how often the header is repeated (if requested):



              ps -eo pid,cmd,pcpu,pmem --sort=-pcpu --lines=20 --header


              will repeat the header every twenty lines (so you’ll get a header, nineteen lines of output, a header, etc.).






              share|improve this answer
























                9












                9








                9






                The screen height doesn’t limit the total output, it determines how often the header is repeated (if requested):



                ps -eo pid,cmd,pcpu,pmem --sort=-pcpu --lines=20 --header


                will repeat the header every twenty lines (so you’ll get a header, nineteen lines of output, a header, etc.).






                share|improve this answer












                The screen height doesn’t limit the total output, it determines how often the header is repeated (if requested):



                ps -eo pid,cmd,pcpu,pmem --sort=-pcpu --lines=20 --header


                will repeat the header every twenty lines (so you’ll get a header, nineteen lines of output, a header, etc.).







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Dec 13 '18 at 12:46









                Stephen Kitt

                165k24366445




                165k24366445






























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