如何将第三列合并为多列

Question

How to merge the 3rd column to x, which starts off looking like this.

16 JUN  TRANSFER                                          blank          150       
        FROM ABC SOME COMPANY PTY LTD
18 JUN    VISA DEBIT PURCHASE CARD 1184                   14                blank    
          7-ELEVEN SYDNEY                                                      
          EFFECTIVE DATE 16 JUN 2020                                                                                                                                        
19 JUN    VISA DEBIT PURCHASE CARD 1184                 19.75               blank    
          DAISO SYDNEY                                                             
          DATE 17 JUN 2020  

and ends up in one line separating the DATE, DETAILS, FEE, FEE

16 JUN, TRANSFER FROM ABC SOME COMPANY PTY LTD, BLANK, 150
18 JUN, VISA DEBIT PURCHASE CARD 1184, 7-ELEVEN SYDNEY, DATE 16 JUN 2020,14, blank
19 JUN, VISA DEBIT PURCHASE CARD 1184,DAISO SYDNEY, DATE 17 JUN 2020, 19.75, blank
                                                                             

Answer 1

This might work for you (GNU sed):

sed -E ':a;N;s/ {2,}|$/, /g
        /(,.*), (.*,.*, )\n(,.*)/{s//\1\3\2/;$!ba};s/, (\n|$)/\1/;P;D' file

Replace two or more spaces or the end of a line, by , , that is form columns.

Append the next line and if it begins with a comma, prepend it to the 3rd column and repeat.

Otherwise, remove the introduced , at the end of the first line in the pattern space, print/delete the first line and repeat.

Answer 2

There is a great page: The Grymoire - AWK

If the data are in the data.txt file, give a try to this:

awk '
/^[0-9][0-9]*[[:blank:]]/ && NF > 3 {
  if (last_cols) {
    printf(", %s\n",last_cols);
  }
  printf("%s %s, ",$1, $2);
  last_cols=$(NF-1) " " $NR;
  for(i=3; i< NF-1; i++) {
    if (i>3) { 
      printf(" ");
    }
    printf("%s",$i);
  }
  next;
}
{ 
  if (NF>=1) {
    printf(", ");
  }
  for(i=1; i<= NF; i++) {
    printf(" %s",$i);
  }
}
END {
  printf(", %s\n",last_cols);
}' data.txt

generated output:

16 JUN,  TRANSFER,  FROM ABC SOME COMPANY PTY LTD, blank 16
18 JUN,  VISA DEBIT PURCHASE CARD 1184,  7-ELEVEN SYDNEY,  EFFECTIVE DATE 16 JUN 2020, 14 VISA
19 JUN,  VISA DEBIT PURCHASE CARD 1184,  DAISO SYDNEY,  DATE 17 JUN 2020, 19.75 CARD