Completing the count of charcters in every line with dots

Multi tool use
Multi tool use

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I would like to know how to count the characters in every line in a text, then subtracting this number from a threshold represents the maximum number of characters allowed per line, after then I would like to fill the gaps between the maximum number of characters and the count of characters with dots. For example:



Unix was 
originally meant 
to be a 
co
nvenient p
latform for progra
mmers developing software to
 be run on it and on other 
systems, rather than for non-
programmers.
[7][8] The system grew larger
 as the operating system star
ted spreading in a
cademic circ
les, as users add
ed their own tools to th
e system and shared them wi
th colleagues.


The maximum number of characters over all the lines is /31/ in line#11. I would like the count of characters in every line to be /31/ by filling the empty spaces with dots, like this:



Unix was , .....................
originally meant , .............
to be a , ......................
co, ............................
nvenient p, ....................
latform for progra, ............
mmers developing software to, ..
be run on it and on other , ....
systems, rather than for non-,..
programmers., ..................
[7][8] The system grew larger,..
as the operating system star, ..
ted spreading in a, ............
cademic circ, ..................
les, as users add, .............
ed their own tools to th, ......
e system and shared them wi, ...
th colleagues., ................


How can I do that in bash?






bash







share|improve this question



























    up vote
    1
    down vote

    favorite












    I would like to know how to count the characters in every line in a text, then subtracting this number from a threshold represents the maximum number of characters allowed per line, after then I would like to fill the gaps between the maximum number of characters and the count of characters with dots. For example:



    Unix was 
    originally meant 
    to be a 
    co
    nvenient p
    latform for progra
    mmers developing software to
     be run on it and on other 
    systems, rather than for non-
    programmers.
    [7][8] The system grew larger
     as the operating system star
    ted spreading in a
    cademic circ
    les, as users add
    ed their own tools to th
    e system and shared them wi
    th colleagues.


    The maximum number of characters over all the lines is /31/ in line#11. I would like the count of characters in every line to be /31/ by filling the empty spaces with dots, like this:



    Unix was , .....................
    originally meant , .............
    to be a , ......................
    co, ............................
    nvenient p, ....................
    latform for progra, ............
    mmers developing software to, ..
    be run on it and on other , ....
    systems, rather than for non-,..
    programmers., ..................
    [7][8] The system grew larger,..
    as the operating system star, ..
    ted spreading in a, ............
    cademic circ, ..................
    les, as users add, .............
    ed their own tools to th, ......
    e system and shared them wi, ...
    th colleagues., ................


    How can I do that in bash?






    bash







    share|improve this question

























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      I would like to know how to count the characters in every line in a text, then subtracting this number from a threshold represents the maximum number of characters allowed per line, after then I would like to fill the gaps between the maximum number of characters and the count of characters with dots. For example:



      Unix was 
      originally meant 
      to be a 
      co
      nvenient p
      latform for progra
      mmers developing software to
       be run on it and on other 
      systems, rather than for non-
      programmers.
      [7][8] The system grew larger
       as the operating system star
      ted spreading in a
      cademic circ
      les, as users add
      ed their own tools to th
      e system and shared them wi
      th colleagues.


      The maximum number of characters over all the lines is /31/ in line#11. I would like the count of characters in every line to be /31/ by filling the empty spaces with dots, like this:



      Unix was , .....................
      originally meant , .............
      to be a , ......................
      co, ............................
      nvenient p, ....................
      latform for progra, ............
      mmers developing software to, ..
      be run on it and on other , ....
      systems, rather than for non-,..
      programmers., ..................
      [7][8] The system grew larger,..
      as the operating system star, ..
      ted spreading in a, ............
      cademic circ, ..................
      les, as users add, .............
      ed their own tools to th, ......
      e system and shared them wi, ...
      th colleagues., ................


      How can I do that in bash?






      bash







      share|improve this question















      I would like to know how to count the characters in every line in a text, then subtracting this number from a threshold represents the maximum number of characters allowed per line, after then I would like to fill the gaps between the maximum number of characters and the count of characters with dots. For example:



      Unix was 
      originally meant 
      to be a 
      co
      nvenient p
      latform for progra
      mmers developing software to
       be run on it and on other 
      systems, rather than for non-
      programmers.
      [7][8] The system grew larger
       as the operating system star
      ted spreading in a
      cademic circ
      les, as users add
      ed their own tools to th
      e system and shared them wi
      th colleagues.


      The maximum number of characters over all the lines is /31/ in line#11. I would like the count of characters in every line to be /31/ by filling the empty spaces with dots, like this:



      Unix was , .....................
      originally meant , .............
      to be a , ......................
      co, ............................
      nvenient p, ....................
      latform for progra, ............
      mmers developing software to, ..
      be run on it and on other , ....
      systems, rather than for non-,..
      programmers., ..................
      [7][8] The system grew larger,..
      as the operating system star, ..
      ted spreading in a, ............
      cademic circ, ..................
      les, as users add, .............
      ed their own tools to th, ......
      e system and shared them wi, ...
      th colleagues., ................


      How can I do that in bash?






      bash




      bash






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 5 mins ago









      Goro

      8,79564384




      8,79564384










      asked 1 hour ago









      Shervan

      34811




      34811




















          2 Answers
          2






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          accepted










          Try this code:



          #!/bin/bash
           # This loop is to count the number of bytes per line, then it will find the max number of bytes over all the lines
          max=$(cat datafile| while IFS=" " read line; do echo "$line" | wc -c; done | sort -k 1.1n | tail -n1)

          cat datafile| while IFS=" " read line; do 
          # Count of bytes in every line
          n=$(echo "$line" | wc -c) 

          # bytes difference in every line
          diff=$(echo $(($max-$n))) 

          # complete the number of bytes per line to the max number of bytes over all the lines.
          dash=$(printf %"$diff"s | tr " " ".")

          # print results
          echo $line,$dash
          done


          output:



          Unix was,.....................
          originally meant,.............
          to be a,......................
          co,...........................
          nvenient p,...................
          latform for progra,...........
          mmers developing software to,.
          be run on it and on other,....
          systems, rather than for non-,
          programmers.,.................
          [7][8] The system grew larger,
          as the operating system star,.
          ted spreading in a,...........
          cademic circ,.................
          les, as users add,............
          ed their own tools to th,.....
          e system and shared them wi,..
          th colleagues.,...............





          share|improve this answer





























            up vote
            1
            down vote













            For text processing tasks, I'd suggest using something like Awk or Perl in place of bash e.g.



            perl -lnE '
             push @a, $_; $max = length $_ > $max ? length $_ : $max 
             } tail -n1)

            cat datafileimprove this answer






















              up vote
              1
              down vote










              up vote
              1
              down vote









              For text processing tasks, I'd suggest using something like Awk or Perl in place of bash e.g.



              perl -lnE '
               push @a, $_; $max = length $_ > $max ? length $_ : $max 
               improve this answer












              For text processing tasks, I'd suggest using something like Awk or Perl in place of bash e.g.



              perl -lnE '
               push @a, $_; $max = length $_ > $max ? length $_ : $max 
               { 
               foreach $x (@a) say $x, ", ", "."x($max - length $x)
              ' file
              Unix was , ....................
              originally meant , ............
              to be a , .....................
              co, ...........................
              nvenient p, ...................
              latform for progra, ...........
              mmers developing software to, .
               be run on it and on other , ..
              systems, rather than for non-, 
              programmers., .................
              [7][8] The system grew larger, 
               as the operating system star, 
              ted spreading in a, ...........
              cademic circ, .................
              les, as users add, ............
              ed their own tools to th, .....
              e system and shared them wi, ..
              th colleagues., ...............






              share|improve this answer












              share|improve this answer



              share|improve this answer










              answered 56 mins ago









              steeldriver

              33k34982




              33k34982



























                   

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