diff options
Diffstat (limited to 'sbin/ping/ping.8')
| -rw-r--r-- | sbin/ping/ping.8 | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/sbin/ping/ping.8 b/sbin/ping/ping.8 index c95f231..2d8110d 100644 --- a/sbin/ping/ping.8 +++ b/sbin/ping/ping.8 @@ -82,19 +82,21 @@ bytes used to fill out the packet. The options are as follows: .It Fl A Audible. Include a bell -.Pq ASCII 0x07 +.Tn ( ASCII +0x07) character in the output when no packet is received before the next packet is transmitted. .It Fl a Audible. Include a bell -.Pq ASCII 0x07 +.Tn ( ASCII +0x07) character in the output when any packet is received. This option is ignored if other format options are present. .It Fl c Ar count Stop after sending -.Pq and receiving +(and receiving) .Ar count .Tn ECHO_RESPONSE packets. @@ -214,10 +216,8 @@ network. If the host is not on a directly-attached network, an error is returned. This option can be used to ping a local host through an interface that has no route through it -.Po -e.g., after the interface was dropped by -.Xr routed 8 -.Pc . +(e.g., after the interface was dropped by +.Xr routed 8 ) . .It Fl s Ar packetsize Specify the number of data bytes to be sent. The default is 56, which translates into 64 @@ -259,7 +259,7 @@ If duplicate packets are received, they are not included in the packet loss calculation, although the round trip time of these packets is used in calculating the round-trip time statistics. When the specified number of packets have been sent -.Pq and received +(and received) or if the program is terminated with a .Dv SIGINT , a brief summary is displayed, showing the number of packets sent and @@ -282,12 +282,14 @@ header followed by an arbitrary amount of data. When a .Ar packetsize is given, this indicated the size of this extra piece of data -.Pq the default is 56 . +(the default is 56). Thus the amount of data received inside of an IP packet of type .Tn ICMP .Tn ECHO_REPLY will always be 8 bytes more than the requested data space -.Pq the Tn ICMP header . +(the +.Tn ICMP +header). .Pp If the data space is at least eight bytes large, .Nm @@ -302,7 +304,7 @@ Duplicate packets should never occur when pinging a unicast address, and seem to be caused by inappropriate link-level retransmissions. Duplicates may occur in many situations and are rarely -.Pq if ever +(if ever) a good sign, although the presence of low levels of duplicates may not always be cause for alarm. Duplicates are expected when pinging a broadcast or multicast address, @@ -359,12 +361,10 @@ specification states that the field for .Tn TCP packets should be set to 60, but many systems use smaller values -.Po -.Bx 4.3 +.No ( Bx 4.3 uses 30, .Bx 4.2 -used 15 -.Pc . +used 15). .Pp The maximum possible value of this field is 255, and most .Ux @@ -430,7 +430,8 @@ heard from the specified .Ar host ; a status of two if the transmission was successful but no responses were received; or another value -.Pq from Aq Pa sysexits.h +(from +.Aq Pa sysexits.h ) if an error occurred. .Sh SEE ALSO .Xr netstat 1 , |
