<b_jonas> `` set -e; f=/hackenv/bin/bfbotquine; d=/hackenv/bin/STOP; >$d echo $\'#!/bin/sh\\nrm -fv \'"$f"; >$f echo $\'#!/bin/sh\\nsleep 50; echo ":"="hackesoquine"; sleep 20\'; chmod -c a+x $d $f

^ (also notated by ⊕ or ⊻) is the exclusive-or operator; ∧ (also notated by /\ or &) is the and (conjunction) operator; ^ (also notated by ↑ or ** or ⋆) is the power operator.