ping5次进行下一次脚本

#!/bin/bash
a(){
ping -c 3 -i 0.2 -w 1 192.168.99.$i &> /dev/null
if [ $? -eq 0 ] ; then
echo 99.$1 ok
else
echo 99.$1 no
fi
}
#for i in {1..100}
#do
#while :
#do
#x=$(pgrep ping | wc -l)
#[ $x -lt 5 ] && break
#sleep 0.2
#done
#a $i &
#done
#wait
mkfifo ./cmd_test
exec 9<> ./cmd_test
for in in {1..10}
do
echo " " > ./cmd_test