UNIX for Dummies Questions & Answers

output_1,output_2,output_3,
file1:303,file2:304:file3:443

header_str=output_1,output_2,output_3,
output_str=file1:303,file2:304:file3:443,

        set -x;
        typeset -L header_str; typeset -L output_str;
        typeset -i op_cnt=1;
        ls -lrt <dirname>|awk '{FS = ",|[ \t]+"} NR>1 { print $9, $5 }'|tr " " ":"|while read line
        do
          header_str=$(echo $header_str,output_file$op_cnt)
          output_str=$(echo $output_str,$line)
          op_cnt=`expr $op_cnt + 1`
        done

        echo  header_str is $header_str;
        echo output_str is $output_str;

$ ls -l
-rwxr-xr-x 1 372 Apr 19 11:43 test.sh
-rw-rw-r-- 1  58 Apr 19 11:44 xxx
-rw-rw-r-- 1  87 Apr 19 11:44 yyy
-rw-rw-r-- 1  29 Apr 19 11:33 zzz

$ cat test.sh
ls -rt > /tmp/list_of_files
number_of_files=`ls | wc -l`
header_str="header_str="
output_str="output_str="
n=1
while read file_name; do
  file_size=`cat $file_name | wc -c`
  header_str="${header_str}output_$n,"
  output_str="${output_str}$file_name:$file_size,"
  n=`expr $n + 1`
done < /tmp/list_of_files

echo header_str is $header_str;
echo output_str is $output_str;

$ ./test.sh
header_str is header_str=output_1,output_2,output_3,output_4,
output_str is output_str=zzz:29,test.sh:372,xxx:58,yyy:87,

ls -l |
  awk '{FS = "[, \t]+"} NR>1 { print $9, $5 }'|
  tr " " ":"|
  { while read line
      do header_str+=,output_file$op_cnt
         output_str+=,$line
         ((op_cnt++))
      done
   echo header_str is $header_str
   echo output_str is $output_str   
  }

set -x;
        export header_str; export output_str;
        typeset -i op_cnt=1;
        ls -lrt <dirname>|awk '{FS = ",|[ \t]+"} NR>1 { print $9, $5 }'|tr " " ":"|while read line
        do
          header_str=$(echo $header_stroutput_file$op_cnt,)
          output_str=$(echo $output_str$line,)
          op_cnt=`expr $op_cnt + 1`
        done

        echo  header_str is $header_str;
        echo output_str is $output_str;