How to restrict awk math output to 2 decimal places












0















My Command is below and its print Free CPU and Used CPU below format.
I want to restrict awk output to 2 decimal place.



grep 'cpu ' /proc/stat | awk '{usage=($2+$4)*100/($2+$4+$5)} {free=($5)*100/($2+$3+$4+$5)} END {print "Used Cpu:",usage "%"} {print "Free Cpu:",free "%"}'


Output : 



Free Cpu: 98.9588%



Used Cpu: 1.04125%


Desired output :



Free Cpu: 98.95%



Used Cpu: 1.04%





linux awk cpu







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  • 2





    use printf: printf "Used Cpu: %.2f%%n", usage

    – glenn jackman
    12 hours ago






  • 1





    Note, your END block only prints "Used Cpu" -- the block that prints "Free Cpu" is not in the END block, and wil therefore print for each line of input.

    – glenn jackman
    12 hours ago
















0















My Command is below and its print Free CPU and Used CPU below format.
I want to restrict awk output to 2 decimal place.



grep 'cpu ' /proc/stat | awk '{usage=($2+$4)*100/($2+$4+$5)} {free=($5)*100/($2+$3+$4+$5)} END {print "Used Cpu:",usage "%"} {print "Free Cpu:",free "%"}'


Output : 



Free Cpu: 98.9588%



Used Cpu: 1.04125%


Desired output :



Free Cpu: 98.95%



Used Cpu: 1.04%





linux awk cpu







share|improve this question









New contributor




Sandeep Singh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
















  • 2





    use printf: printf "Used Cpu: %.2f%%n", usage

    – glenn jackman
    12 hours ago






  • 1





    Note, your END block only prints "Used Cpu" -- the block that prints "Free Cpu" is not in the END block, and wil therefore print for each line of input.

    – glenn jackman
    12 hours ago














0












0








0








My Command is below and its print Free CPU and Used CPU below format.
I want to restrict awk output to 2 decimal place.



grep 'cpu ' /proc/stat | awk '{usage=($2+$4)*100/($2+$4+$5)} {free=($5)*100/($2+$3+$4+$5)} END {print "Used Cpu:",usage "%"} {print "Free Cpu:",free "%"}'


Output : 



Free Cpu: 98.9588%



Used Cpu: 1.04125%


Desired output :



Free Cpu: 98.95%



Used Cpu: 1.04%





linux awk cpu







share|improve this question









New contributor




Sandeep Singh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












My Command is below and its print Free CPU and Used CPU below format.
I want to restrict awk output to 2 decimal place.



grep 'cpu ' /proc/stat | awk '{usage=($2+$4)*100/($2+$4+$5)} {free=($5)*100/($2+$3+$4+$5)} END {print "Used Cpu:",usage "%"} {print "Free Cpu:",free "%"}'


Output : 



Free Cpu: 98.9588%



Used Cpu: 1.04125%


Desired output :



Free Cpu: 98.95%



Used Cpu: 1.04%





linux awk cpu




linux awk cpu






share|improve this question









New contributor




Sandeep Singh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




Sandeep Singh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited 4 mins ago









Isaac

11.6k11752




11.6k11752






New contributor




Sandeep Singh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked 12 hours ago









Sandeep SinghSandeep Singh

1




1




New contributor




Sandeep Singh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Sandeep Singh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Sandeep Singh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.








  • 2





    use printf: printf "Used Cpu: %.2f%%n", usage

    – glenn jackman
    12 hours ago






  • 1





    Note, your END block only prints "Used Cpu" -- the block that prints "Free Cpu" is not in the END block, and wil therefore print for each line of input.

    – glenn jackman
    12 hours ago














  • 2





    use printf: printf "Used Cpu: %.2f%%n", usage

    – glenn jackman
    12 hours ago






  • 1





    Note, your END block only prints "Used Cpu" -- the block that prints "Free Cpu" is not in the END block, and wil therefore print for each line of input.

    – glenn jackman
    12 hours ago








2




2





use printf: printf "Used Cpu: %.2f%%n", usage

– glenn jackman
12 hours ago





use printf: printf "Used Cpu: %.2f%%n", usage

– glenn jackman
12 hours ago




1




1





Note, your END block only prints "Used Cpu" -- the block that prints "Free Cpu" is not in the END block, and wil therefore print for each line of input.

– glenn jackman
12 hours ago





Note, your END block only prints "Used Cpu" -- the block that prints "Free Cpu" is not in the END block, and wil therefore print for each line of input.

– glenn jackman
12 hours ago










2 Answers
2






active

oldest

votes


















3














A bit of code review:




  • awk can do what grep does, so you don't need the pipeline

  • add newlines to the awk code for reability


For example:



awk '$1 == "cpu" {

  printf "Used Cpu: %5.2f%%n", 100*($2+$4)/($2+$4+$5)

  printf "Free Cpu: %5.2f%%n", 100*$5/($2+$3+$4+$5)

}' /proc/stat


which outputs the nicely aligned



Used Cpu:  5.34%

Free Cpu: 94.63%





share|improve this answer

































    0














    An alternative way is to define an output format OFMT="%5.2f%%" to format all numeric output:



    $ awk -v OFMT="%5.2f%%" '
    
         $1 == "cpu" {
    
                       print( "Used Cpu: ", 100*($2+$4)/($2+$4+$5) )
    
                       print( "Free Cpu: ", 100*$5/($2+$3+$4+$5) )
    
                     }
    
         ' /proc/stat
    

    

    
Used Cpu:   9.52%
    
Free Cpu:  90.48%




    share























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      2 Answers
      2






      active

      oldest

      votes








      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      3














      A bit of code review:




      • awk can do what grep does, so you don't need the pipeline

      • add newlines to the awk code for reability


      For example:



      awk '$1 == "cpu" {
      
  printf "Used Cpu: %5.2f%%n", 100*($2+$4)/($2+$4+$5)
      
  printf "Free Cpu: %5.2f%%n", 100*$5/($2+$3+$4+$5)
      
}' /proc/stat


      which outputs the nicely aligned



      Used Cpu:  5.34%
      
Free Cpu: 94.63%





      share|improve this answer






























        3














        A bit of code review:




        • awk can do what grep does, so you don't need the pipeline

        • add newlines to the awk code for reability


        For example:



        awk '$1 == "cpu" {
        
  printf "Used Cpu: %5.2f%%n", 100*($2+$4)/($2+$4+$5)
        
  printf "Free Cpu: %5.2f%%n", 100*$5/($2+$3+$4+$5)
        
}' /proc/stat


        which outputs the nicely aligned



        Used Cpu:  5.34%
        
Free Cpu: 94.63%





        share|improve this answer




























          3












          3








          3







          A bit of code review:




          • awk can do what grep does, so you don't need the pipeline

          • add newlines to the awk code for reability


          For example:



          awk '$1 == "cpu" {
          
  printf "Used Cpu: %5.2f%%n", 100*($2+$4)/($2+$4+$5)
          
  printf "Free Cpu: %5.2f%%n", 100*$5/($2+$3+$4+$5)
          
}' /proc/stat


          which outputs the nicely aligned



          Used Cpu:  5.34%
          
Free Cpu: 94.63%





          share|improve this answer















          A bit of code review:




          • awk can do what grep does, so you don't need the pipeline

          • add newlines to the awk code for reability


          For example:



          awk '$1 == "cpu" {
          
  printf "Used Cpu: %5.2f%%n", 100*($2+$4)/($2+$4+$5)
          
  printf "Free Cpu: %5.2f%%n", 100*$5/($2+$3+$4+$5)
          
}' /proc/stat


          which outputs the nicely aligned



          Used Cpu:  5.34%
          
Free Cpu: 94.63%






          share|improve this answer














          share|improve this answer



          share|improve this answer








          answered 12 hours ago


























          community wiki





          glenn jackman


























              0














              An alternative way is to define an output format OFMT="%5.2f%%" to format all numeric output:



              $ awk -v OFMT="%5.2f%%" '
              
         $1 == "cpu" {
              
                       print( "Used Cpu: ", 100*($2+$4)/($2+$4+$5) )
              
                       print( "Free Cpu: ", 100*$5/($2+$3+$4+$5) )
              
                     }
              
         ' /proc/stat
              

              

              
Used Cpu:   9.52%
              
Free Cpu:  90.48%




              share




























                0














                An alternative way is to define an output format OFMT="%5.2f%%" to format all numeric output:



                $ awk -v OFMT="%5.2f%%" '
                
         $1 == "cpu" {
                
                       print( "Used Cpu: ", 100*($2+$4)/($2+$4+$5) )
                
                       print( "Free Cpu: ", 100*$5/($2+$3+$4+$5) )
                
                     }
                
         ' /proc/stat
                

                

                
Used Cpu:   9.52%
                
Free Cpu:  90.48%




                share


























                  0












                  0








                  0







                  An alternative way is to define an output format OFMT="%5.2f%%" to format all numeric output:



                  $ awk -v OFMT="%5.2f%%" '
                  
         $1 == "cpu" {
                  
                       print( "Used Cpu: ", 100*($2+$4)/($2+$4+$5) )
                  
                       print( "Free Cpu: ", 100*$5/($2+$3+$4+$5) )
                  
                     }
                  
         ' /proc/stat
                  

                  

                  
Used Cpu:   9.52%
                  
Free Cpu:  90.48%




                  share













                  An alternative way is to define an output format OFMT="%5.2f%%" to format all numeric output:



                  $ awk -v OFMT="%5.2f%%" '
                  
         $1 == "cpu" {
                  
                       print( "Used Cpu: ", 100*($2+$4)/($2+$4+$5) )
                  
                       print( "Free Cpu: ", 100*$5/($2+$3+$4+$5) )
                  
                     }
                  
         ' /proc/stat
                  

                  

                  
Used Cpu:   9.52%
                  
Free Cpu:  90.48%





                  share











                  share


                  share










                  answered 8 mins ago









                  IsaacIsaac

                  11.6k11752




                  11.6k11752






















                      Sandeep Singh is a new contributor. Be nice, and check out our Code of Conduct.










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