#!/usr/local/bin/tclsh8.4
# The exec tclsh<whatever>'' below will simply be ignored.
#
# This script sleeps for 5 seconds, then generates output.
# \
if [ -e /usr/bin/tclsh ]; then exec /usr/bin/tclsh "$0" ${1+"$@"} ; fi
# \
if [ -e /usr/local/bin/tclsh8.4 ]; then exec /usr/local/bin/tclsh8.4 "$0" ${1+"$@"} ; fi
# \
if [ -e /usr/local/bin/tclsh8.3 ]; then exec /usr/local/bin/tclsh8.3 "$0" ${1+"$@"} ; fi
# \
if [ -e /usr/bin/tclsh8.4 ]; then exec /usr/bin/tclsh8.4 "$0" ${1+"$@"} ; fi
# \
exec tclsh "$0" ${1+"$@"}

set text [exec sleep 5; exec ls]
puts $text

close [open /tmp/something w]

exit 0