Hi, @misc!
Here is a very simply hack to ping. It isn't pretend to something, hope
it will be useful for anybody as endless host checking in scripts.
% ping -Q example.com && echo 'abc' > /dev/speaker # etc..
Index: ping.8
===================================================================
RCS file: /cvs/src/sbin/ping/ping.8,v
retrieving revision 1.31
diff -r1.31 ping.8
44c44
< .Op Fl DdfLnqRrv
---
> .Op Fl DdfLnQqRrv
141a142,144
> .It Fl Q
> Immediately exit program returning 0 exit status when at least ONE
> ICMP ECHO_REPLY packet has been received.
Index: ping.c
===================================================================
RCS file: /cvs/src/sbin/ping/ping.c,v
retrieving revision 1.77
diff -r1.77 ping.c
122a123
> #define F_REPLYQUIT 0x2000
214c215
< "DI:LRS:c:dfi:jl:np:qrs:T:t:vw:")) != -1)
---
> "DI:LRS:c:dfi:jl:np:qrs:T:t:vw:xQ")) != -1)
319a321,323
> case 'Q':
> options |= F_REPLYQUIT;
> break;
496c500
<
---
>
506a511,517
> /*
> * Quickly exit program with exit code 0 if -Q is used
> * and we've received at least one ECHO_REPLY packet.
> */
> if (options & F_REPLYQUIT && nreceived > 0)
> finish(0);
>
1345c1356
< "usage: ping [-DdfjLnqRrv] [-c count] [-I ifaddr] [-i wait]
\n" ---
> "usage: ping [-DdfjLnqRrvQ] [-c count] [-I ifaddr] [-i wait]
> \n"
--
"God is real, unless declared integer."
