Put in proper address information for Poul-Henning Kamp.

[unix-history] / sbin / ping / ping.c

diff --git a/sbin/ping/ping.c b/sbin/ping/ping.c
index 9ba6c6a..3609ae2 100644 (file)
--- a/sbin/ping/ping.c
+++ b/sbin/ping/ping.c
@@ -709,7 +709,24 @@ finish()
        if (nreceived && timing)
                (void)printf("round-trip min/avg/max = %.3f/%.3f/%.3f ms\n",
                    tmin/1000.0, tsum/(nreceived + nrepeats)/1000.0, tmax/1000.0);
        if (nreceived && timing)
                (void)printf("round-trip min/avg/max = %.3f/%.3f/%.3f ms\n",
                    tmin/1000.0, tsum/(nreceived + nrepeats)/1000.0, tmax/1000.0);

-       exit(0);
+
+       /*
+        * 13NOV93 GRS
+        * added code to return 1 if no packets were returned to the receiver.
+        * Originally PING returned 0 regardless of how many packets were 
+        * returned, thus the only way to test the return value of PING in a 
+        * shell script was to do something like:
+        *
+        *   if ping -n -c 1 -r $IP_ADDR | grep '0 packets received' >/dev/null
+        *
+        * now, all that is needed is:
+        *
+        *   if ping -n -c 1 -r $IP_ADDR >/dev/null
+        */
+       if (nreceived)
+               exit (0);
+       else
+               exit (1);

 }
 
 #ifdef notdef
 }
 
 #ifdef notdef