in Electronic Mail

towers of hanoi in sendmail

Classic. But still truly frightening.

Towers of Hanoi in

From shrchin Thu Jan 25 05:38:40 1996
Newsgroups: alt.sysadmin.recovery
Subject: Re: ASR London – The Next Generation
Message-ID: <[email protected]>
From: [email protected] (Jonathan H. N. Chin)
References: <[email protected]> <[email protected]> <[email protected]>

[email protected] (Nick Cuccia) writes:
>–Nick (still working on towers of hanoi in…)

I was planning to go home early for once.

# Towers of Hanoi
RHANOI:$+ $:1 2 3$1
R$-$-$-$*[$+] $:$1$2$3$4

R$-$-$- $@$1$2$3
R$-$-$-@$* $:$>49 $1$3$2$4
R$-$-$-$* $:$>49 $2$3$1$4[Move Top Disk Of Peg $1 To Peg $3]
R$-$-$-$* $:$3$2$1@$4

Add to your /etc/ equivalent.
If S49 is in use, change the three `49’s to an unused ruleset.

Invoke with something like:

echo ’49 HANOI:@@@@’ | /usr/sbin/sendmail -bt -d21

Add `@’s to taste.
Assumes you have three pegs and want to move the stack from
the first peg to the second.

v8 output is cleaner than SunOS.

Was too lazy to make it count (ie. let `HANOI:14′, etc, work);
Didn’t seem too hard, but kind of long-winded and tedious.

Anyone know the iterative (non-recursive) solution?


And that, friends, is why I use Postfix.

Write a Comment