==================	spamassassin's report
/^ +[[:digit:].]+ points/ {print "(score=" $1 ")."}
------------------
BEGIN {flag=0};
/^[^[:space:]]/ { ($1 ~ /X-Spam-Report/) ? flag=1 : flag=0};
{if (flag) print };
================== swap col 3 and 4
awk '{
    output = "";
    split($0, a);
    temp=a[3]; a[3]=a[4]; a[4]=temp;
    for (i=1; i <= length(a); i++){
        if (i-1) output = output "\t";
        output = output i a[i]};
        print output
    }'

===== print files that match current month
-rw-r--r-- 1 raffi raffi 18838872 Aug 27 13:10 Hour1aug27.mp3
-rw-r--r-- 1 raffi raffi 18836568 Aug 28 13:08 Hour1aug28.mp3
-rw-r--r-- 1 raffi raffi 12506296 Jul  2 13:07 Hour1july02.mp3
-rw-r--r-- 1 raffi raffi 12501188 Jul  6 13:07 Hour1july06.mp3

Hour1aug27.mp3 Hour1aug28.mp3 Hour1july02.mp3 Hour1july06.mp3

ls | awk -vnow=$(date '+%b') '{if ($6 ~ now) print $9}'