1#!./sh 2 3func_c() 4{ 5 echo "Function C" 6 sleep 1 7} 8 9func_b() 10{ 11 echo "Function B" 12 sleep 1 13 func_c 14} 15 16func_a() 17{ 18 echo "Function A" 19 sleep 1 20 func_b 21} 22 23func_a 24