Was trying to get a list of systems up on the network. Pingall.sh would not work at all. It was driving me nuts. So I went to another system and it worked.
$ cat pingall.sh
a=""
for i in {1..254}
do
ping 192.168.1.$i -c1 -w1 -v | grep "icmp_seq=1"
done
$ ./pingall.sh
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.623 ms
64 bytes from 192.168.1.32: icmp_seq=1 ttl=64 time=0.113 ms
64 bytes...
