Document ping(8) reaction to SIGINFO.

PR:		doc/33639
Reviewed by:	ru
Approved by:	ru
MFC after:	1 week

1 files changed, 13 insertions, 1 deletions

diff --git a/sbin/ping/ping.8 b/sbin/ping/ping.8
index ef133e8..cb3b42e 100644
--- a/sbin/ping/ping.8
+++ b/sbin/ping/ping.8
@@ -266,9 +266,21 @@ When the specified number of packets have been sent
 or if the program is terminated with a
 .Dv SIGINT ,
 a brief summary is displayed, showing the number of packets sent and
-received, and the minimum, maximum, mean, and standard deviation of
+received, and the minimum, mean, maximum, and standard deviation of
 the round-trip times.
 .Pp
+If
+.Nm
+receives a
+.Dv SIGINFO
+(see the
+.Cm status
+argument for
+.Xr stty 1 )
+signal, the current number of packets sent and received, and the
+minimum, mean, and maximum of the round-trip times will be written to
+the standard error output.
+.Pp
 This program is intended for use in network testing, measurement and
 management.
 Because of the load it can impose on the network, it is unwise to use