$ ksh -i
$ ./sig.sh &
[1] 49468
$ ^D
You have stopped jobs
[1] + Stopped (tty input)  ./sig.sh
$ ^D
Signal: 1
Signal: 19
[1] + Done (129)           ./sig.sh


cat sig.sh:
#!/bin/sh
trap "echo Signal: 1" 1
trap "echo Signal: 2" 2
trap "echo Signal: 3" 3
trap "echo Signal: 4" 4
trap "echo Signal: 5" 5
trap "echo Signal: 6" 6
trap "echo Signal: 7" 7
trap "echo Signal: 8" 8
trap "echo Signal: 9" 9
trap "echo Signal: 10" 10
trap "echo Signal: 11" 11
trap "echo Signal: 12" 12
trap "echo Signal: 13" 13
trap "echo Signal: 15" 15
trap "echo Signal: 16" 16
trap "echo Signal: 17" 17
trap "echo Signal: 18" 18
trap "echo Signal: 19" 19
read