An interactive bash is killed by SIGINT after a command to unset any trap for SIGINT.
$ cat >/tmp/dotscript <<EOF trap trap - INT kill -s INT "$$" EOF $ . /tmp/dotscript (no output of 'trap') (interactive shell exits) As far as I can determine, this behaviour is unique to bash. I think this is a bug, particularly because it makes Ctrl+C have the same effect: $ cat /tmp/dotscript2 trap - INT echo "Try pressing Ctrl-C" read junk $ . /tmp/dotscript2 Try pressing Ctrl-C ^C (interactive shell exits) Interestingly, the shell does not exit without the "trap - INT", although no trap was set for INT to begin with (as shown by the empty output of "trap"). - M.
