1: #!/bin/ksh
   2: 
   3: background()
   4: {
   5:    sleep 10
   6:    echo "Background"
   7:    sleep 10
   8: }
   9: 
  10: echo "ps before background function"
  11: ps
  12: background &
  13: echo "My PID=$$"
  14: echo "Background function PID=$!"
  15: echo "ps after background function"
  16: ps
  17: exit 0