foo2.awk

#!/usr/bin/awk -f

# Podsumowanie gw. kategorii
# Wykonanie awk -f foo2.awk co='wartosc' plik
#

BEGIN {
sub("^:","#>", co); sub(":$","#<", co);
gsub(":",":[^:]*:", co);
sub("^#>",":", co); sub("#<$",":", co);
print "Szukam: " co ; }

$0 ~ /<<month>>/ { if (sum > 0 ) {mn++;  M[ mn " : " cm ] = summ ; summ = 0;   };
                      cm = $3;  next }

$0 ~ co {sum +=$1 ; summ+=$1; print $0 " ; " cm ;}

END { print "Razem: " sum }
END {
   print "Miesiace: "
   for ( m in M ) {
      print m " : "  M[m] | " sort -n";
   }
}