Shell Programming and Scripting

111 12 7
111 13 8
112 12 9
115 31 3
120 31 9
123 10 7
125 12

111 12 7
111 13 8
112 12 9
115 31 3

 arr=($(cut -d ' ' -f1 < input.dat))
 mkdir $(for ((i=0;i<${#arr[@]};i=i+$n)); do echo ${arr[$i]-$arr[$i+$n]}; done)

awk ' f1  {n++}{print > "cat"n++"-"n++30".txt"}' input.dat

awk '
{line[NR]=$0; number[NR]=$1;}
END {
   loop_begin=int((number[1]+10)/10)*10;
   loop_end=int((number[NR]+10)/10)*10;
   line_pointer=1;
   for (i=loop_begin; i<=loop_end; i+=step_size) {
      dir1=number[line_pointer];
      line_count=0;
      while (number[line_pointer] && number[line_pointer] <= i) {
         file_lines[line_count++]=line[line_pointer];
         line_pointer++;
      }
      dir2=number[line_pointer-1];
      directory=dir1 "-" dir2;
      file=directory "/" "f_" directory;
      print "[[ -d " directory " ]] && rm -rf " directory;
      print "mkdir " directory;
      for (j=0; j<line_count; j++) print "echo " file_lines[j] " >> " file;
   }

}
' step_size=10 input_file | sh

awk '{ N[int($1/stepsize)]=N[int($1/stepsize)]"\n"$0 }
END { for(i in N) {
   dir=sprintf("%d-%d",i*stepsize,(i+1)*stepsize-1)
   printf "[ -d %s ] || mkdir %s\n", dir, dir
   printf "cat > %s/f_%s <<EOF", dir, dir
   print N[i]
   print "EOF"
}
}' stepsize=10 infile | sh

STEP=5
while read LINE
   do   read A B C <<< $LINE
        TM1=$(( (A-1) / STEP * STEP + 1 ))
        TMP=$TM1-$(( TM1 + STEP - 1 ))
        mkdir -p $TMP
        echo $LINE >> $TMP/f-$TMP
   done < file