#!/bin/shtrap 'rm -f /tmp/my_tmp_file_$$' INTecho creating file /tmp/my_tmp_file_$$date > /tmp/my_tmp_file_$$echo "Press interrupt (Ctrl-C) to interrupt...."while [ -f /tmp/my_tmp_file_$$ ]; do    echo File exists    sleep 1doneecho The file no longer existstrap -INTecho creating file /tmp/my_tmp_file_$$date > /tmp/my_tmp_file_$$echo "Press interrupt (Ctrl-C) to interrupt...."while [ -f /tmp/my_tmp_file_$$ ]; do    echo File exists    sleep 1doneecho We never get hereexit 0