>> You can do a broadcast ping.
[snip]
>
> Not on all versions of ping, it seems:
>
> ,--
> | [eben@pc eben]$ ping -b 192.168.1.255
> | WARNING: pinging broadcast address
> | PING 192.168.1.255 (192.168.1.255) from 192.168.1.11 : 56(84) bytes of data.
> | 64 bytes from 192.168.1.11: icmp_seq=1 ttl=64 time=0.039 ms
Hmm.. It's possible that some of the hosts are set to not respond to broadcast
pings. On Linux there's a setting in /proc/net that toggles this:
/proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
It's also possible that host based firewalls are preventing the response?
Another possibility besides your script may be to query the arp cache.
-- * The Digital Hermit http://www.digitalhermit.com * Unix and Linux Solutions kwan@digitalhermit.com ----------------------------------------------------------------------- This list is provided as an unmoderated internet service by Networked Knowledge Systems (NKS). Views and opinions expressed in messages posted are those of the author and do not necessarily reflect the official policy or position of NKS or any of its employees.
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