#!/bin/bash
################# this script creates an outfile with "val" number of lines of   digits with the columns aligned . val can be set to what you want
################# but formating only works to 999 so far , but its eay to extend,
#################  WARNING: you will still need to edit the outfile to add or remove the final last digits to the desired final number
#################        since this script cant perfectly write  to 64,128,256,512... and such
################# mike , undergrad, friday,4th,2011.
################# hope it makes your work easier!!


if [ $# -eq 0 ]
then
   echo " "
fi

myarray=(1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20)
count=0
n=0
val=25                  ######### change this to the number of lines you want ie if 1..50 , val~3 since there are
                        ######### roughly five  lines of digits

echo -n " even or odd ? "
read -e TYPE
 if [ "$TYPE" =  "even" ]
  then let  type=2
  else let  type=1
 fi

tens=99
hundreds=999            ######### you would need to add other variables like this to extend column alignment to greater than 999

i=0
if [ "$type" -eq 2 ]; then    ###########      for the even list of digits

 echo >> outfile$type
 for i in ${myarray[@]}
           do
        if (( ("$i" % 2) ==  "0" )); then
           sed '$s/$/ '$i'/' -i outfile$type
          # echo $i
         if   [ "${myarray[$i]}" -gt  "10" ] ; then
               sed '$s/$/  /' -i outfile$type
           else   sed '$s/$/   /' -i outfile$type   ######this adjusts the space between the ones digits , space is added or removed bbetween the forward slashes
           fi
        fi
           done
  echo >> outfile$type
  while [ $n -le $val ]
   do
        for i in ${myarray[@]}
           do
            myarray[$count]=`expr $i + 20`
            ((count++))
           done
         count=0


       for i in ${myarray[@]}
           do
         if (( ("$i" % 2) == "0" )) ; then          ################        check if its odd or even
           sed '$s/$/ '$i'/' -i outfile$type
              if [ "${myarray[0]}" -le "$tens" ] ; then
                  sed '$s/$/  /' -i outfile$type         ######### this adjusts space between the tens digits to be aligned with the ones digits

                elif [ "${myarray[0]}" -le "$hundreds" ]; then
                 sed '$s/$/ /' -i outfile$type           ######### this adjusts the space between the hundreds digits to be aligned with the ones & tens

                         ######## you would add such elifs from here to extend the column alignment beyond 999
               else
                 sed '$s/$/ /' -i outfile$type            ######## adjusts space after hundreds
              fi
         fi
           done
           echo >> outfile$type

         let n++
  done



else                                          ############## for odd numbers

echo >> outfile$type
 for i in ${myarray[@]}
           do
        if (( ("$i" % 2) !=  "0" )); then
           sed '$s/$/ '$i'/' -i outfile$type
           if  [ "${myarray[$i]}" -gt  "10" ]; then
               sed '$s/$/  /' -i outfile$type
           else   sed '$s/$/   /' -i outfile$type   ######this adjusts the space between the ones digits , space is added or removed bbetween the forward slashes
           fi
        fi
           done

  echo >> outfile$type

  while [ $n -le $val ]
   do

        for i in ${myarray[@]}
           do
            myarray[$count]=`expr $i + 20`
            ((count++))
           done
         count=0


       for i in ${myarray[@]}
           do
         if (( ("$i" % 2) != "0" )) ; then          ################        check if its odd or even
           sed '$s/$/ '$i'/' -i outfile$type
              if [ "${myarray[0]}" -le "$tens" ] ; then
                  sed '$s/$/  /' -i outfile$type         ######### this adjusts space between the tens digits to be aligned with the ones digits

                elif [ "${myarray[0]}" -le "$hundreds" ]; then
                 sed '$s/$/ /' -i outfile$type           ######### this adjusts the space between the hundreds digits to be aligned with the ones & tens

                         ######## you would add such elifs from here to extend the column alignment beyond 999
               else
                 sed '$s/$/ /' -i outfile$type            ######## adjusts space after hundreds
              fi
         fi
           done
           echo >> outfile$type

         let n++
  done
fi









this is the error message thought the script does what its intended to do:


 ./Onetofive: line 40: [: : integer expression expected

funny thing is that it only gives the error message when i choose the "even"
choice , but still does what its intended, the "odd" does not give any error message

i'v highlighted line 40


here is what it gives with "set -x"

+ ./Onetofive

 even or odd ? even
./Onetofive: line 40: [: : integer expression expected
++ echo -ne '\033]0;mike@localhost:~/work/worksub/scripts'



here is part of the debug output:
...
+ for i in '${myarray[@]}'
+ ((  (15 % 2) ==  0  ))
+ for i in '${myarray[@]}'
+ ((  (16 % 2) ==  0  ))
+ sed '$s/$/ 16/' -i outfile2
+ '[' 17 -gt 10 ']'
+ sed '$s/$/  /' -i outfile2
+ for i in '${myarray[@]}'
+ ((  (17 % 2) ==  0  ))
+ for i in '${myarray[@]}'
+ ((  (18 % 2) ==  0  ))
+ sed '$s/$/ 18/' -i outfile2
+ '[' 19 -gt 10 ']'
+ sed '$s/$/  /' -i outfile2
+ for i in '${myarray[@]}'
+ ((  (19 % 2) ==  0  ))
+ for i in '${myarray[@]}'
+ ((  (20 % 2) ==  0  ))
+ sed '$s/$/ 20/' -i outfile2
+ '[' '' -gt 10 ']'
Onetofive: line 40: [: : integer expression expected
+ sed '$s/$/   /' -i outfile2
+ echo
+ '[' 0 -le 5 ']'
...



everything seems to go ok until ${myarray[@]} seems to evaluate to an empty ''  how does does that happen? and why just for "even" the array just has digits 1..20






 2    4    6    8    10   12   14   16   18   20
 22   24   26   28   30   32   34   36   38   40
 42   44   46   48   50   52   54   56   58   60
 62   64   66   68   70   72   74   76   78   80
 82   84   86   88   90   92   94   96   98   100
 102  104  106  108  110  112  114  116  118  120
 122  124  126  128  130  132  134  136  138  140
 142  144  146  148  150  152  154  156  158  160
 162  164  166  168  170  172  174  176  178  180
 182  184  186  188  190  192  194  196  198  200
 202  204  206  208  210  212  214  216  218  220
 222  224  226  228  230  232  234  236  238  240
 242  244  246  248  250  252  254  256  258  260
 262  264  266  268  270  272  274  276  278  280
 282  284  286  288  290  292  294  296  298  300
 302  304  306  308  310  312  314  316  318  320
 322  324  326  328  330  332  334  336  338  340
 342  344  346  348  350  352  354  356  358  360
 362  364  366  368  370  372  374  376  378  380
 382  384  386  388  390  392  394  396  398  400
 402  404  406  408  410  412  414  416  418  420
 422  424  426  428  430  432  434  436  438  440
 442  444  446  448  450  452  454  456  458  460
 462  464  466  468  470  472  474  476  478  480
 482  484  486  488  490  492  494  496  498  500
 502  504  506  508  510  512  514  516  518  520
 522  524  526  528  530  532  534  536  538  540