util-linux/shell/ash_test/ash-signals/signal3.tests

   1 #!/bin/sh
   2
   3 $THIS_SH -c '
   4 hup() {
   5     echo "child got HUP"
   6 }
   7 trap hup HUP
   8 echo "child sleeps"
   9 sleep 1
  10 echo "child exits"
  11 ' &
  12
  13 child=$!
  14 sleep 0.1 # let child install handler first
  15 kill -HUP $child
  16 wait
  17 echo "parent exits"