Re: (HOWTO) Deleting Microsoft spams on POP3 server

From: William Park (opengeometry_at_yahoo.ca)
Date: 12/29/03 

Date: 28 Dec 2003 23:29:11 GMT

In <comp.mail.misc> Chris F.A. Johnson <c.fa.johnson@rogers.com> wrote:
> > exec 3<>/dev/tcp/$SERVER/pop3 0<&3 1>&3
> > read code
> > send user $USER
> > send pass $PASS
> > send stat
> > read ok n size <<< "$code" # +OK 11 1504321\r\n
> > if [ $n -gt 0 ]; then
> > for i in `seq 1 $n`; do
> > delete='no'
> > send top $i 0
> > while read line; do # ...\r\n
> > line=${line%$'\r'} # ...\r
> > egrep -q 'boundary="[a-z]+"' <<< "$line" && delete='yes'
> > [ "$line" = . ] && break
> > done
> > [ "$delete" = yes ] && send dele $i
> > done
>
> No need for seq; no need for egrep (and the -q option is not
> portable):

I need Egrep regular expression, because I must match all lowercase
letter delimited by double-quotes, ie.
    "[a-z]+"
This is straight cut/paste of my ~/.procmailrc. If you've got Egrep,
then you've got '-q' option.

> i=0
> while [ $i -lt $n ]; do
> i=$(( $i + 1 ))
> send top $i 0
> case ${line%$'\r'} in
> .) break ;;
> *boundary=\"[a-z]*) send dele $i ;;
> esac
> done

Hmm, it can be further reduced to
    for (( i=1; i<=n; i++ )); do
        send top $i 0
        ...
    done
Saves 2 lines.

>
> > fi
> > send quit
>
> Unfortunately, that string will also match some legitimate e-mails.

Which string? mine or yours?

> I've been using a shell script to filter and download my e-mail
> since the SWEN virus hit in September. It's at:
> <http://cfaj.freeshell.org/shell/scripts/mfilter>

I've seen it before, and I simply don't understand it. :-) 

-- 
William Park, Open Geometry Consulting, <opengeometry@yahoo.ca>
Linux solution for data management and processing.