Hi
/usr/bin/ping does not return the correct return code on ping failure.
See example below, the .8 host does not exist, .9 does exist:
$ ping 56 1 192.168.20.9 /dev/null ; echo $?
0
$ ping 56 1 192.168.20.8 /dev/null ; echo $?
0
I checked Linux and Windows versions of ping and they work
Tom Van Looy wrote on 28 May 2008 11:12:
Hi
/usr/bin/ping does not return the correct return code on ping failure.
See example below, the .8 host does not exist, .9 does exist:
$ ping 56 1 192.168.20.9 /dev/null ; echo $?
0
$ ping 56 1 192.168.20.8 /dev/null ; echo $?
0
I didn't
Didn't read the --help, either, as far as I can see.
Ehrr... right, my fault. Wrong copy from my terminal.
But that does not change the ping behavior ...
$ /usr/bin/ping 192.168.20.9 56 1 ; echo $?
PING 192.168.20.9 (192.168.20.9): 56 data bytes
64 bytes from 192.168.20.9: icmp_seq=0 ttl=64
I looked a little further and saw that this is a port that I probably just
installed to try it out and hoped it had GNU ping arguments (so bash scripts
are portable between Linux and Cygwin).
Anyway, I don't know what happend but it's a 4.3BSD utility. Even 4.3BSD
derived systems do the return
Tom Van Looy wrote on 28 May 2008 13:52:
I looked a little further and saw that this is a port that I probably
just installed to try it out and hoped it had GNU ping arguments (so bash
scripts are portable between Linux and Cygwin).
Anyway, I don't know what happend but it's a 4.3BSD
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