| ping.8 (1559) | ping.8 (17724) |
|---|---|
| 1.\" Copyright (c) 1985, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 27 unchanged lines hidden (view full) --- 36.Os BSD 4.3 37.Sh NAME 38.Nm ping 39.Nd send 40.Tn ICMP ECHO_REQUEST 41packets to network hosts 42.Sh SYNOPSIS 43.Nm ping | 1.\" Copyright (c) 1985, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 27 unchanged lines hidden (view full) --- 36.Os BSD 4.3 37.Sh NAME 38.Nm ping 39.Nd send 40.Tn ICMP ECHO_REQUEST 41packets to network hosts 42.Sh SYNOPSIS 43.Nm ping |
| 44.Op Fl dfnqrvR | 44.Op Fl dfnqrvRQ |
| 45.Op Fl c Ar count 46.Op Fl i Ar wait 47.Op Fl l Ar preload 48.Op Fl p Ar pattern 49.Op Fl s Ar packetsize 50.Sh DESCRIPTION 51.Nm Ping 52uses the --- 57 unchanged lines hidden (view full) --- 110No attempt will be made to lookup symbolic names for host addresses. 111.It Fl p Ar pattern 112You may specify up to 16 ``pad'' bytes to fill out the packet you send. 113This is useful for diagnosing data-dependent problems in a network. 114For example, 115.Dq Li \-p ff 116will cause the sent packet to be filled with all 117ones. | 45.Op Fl c Ar count 46.Op Fl i Ar wait 47.Op Fl l Ar preload 48.Op Fl p Ar pattern 49.Op Fl s Ar packetsize 50.Sh DESCRIPTION 51.Nm Ping 52uses the --- 57 unchanged lines hidden (view full) --- 110No attempt will be made to lookup symbolic names for host addresses. 111.It Fl p Ar pattern 112You may specify up to 16 ``pad'' bytes to fill out the packet you send. 113This is useful for diagnosing data-dependent problems in a network. 114For example, 115.Dq Li \-p ff 116will cause the sent packet to be filled with all 117ones. |
| 118.It Fl Q 119Somewhat quiet output. 120Don't display ICMP error messages that are in response to our query messages. 121Originally, the 122.Fl v 123flag was required to display such errors, but 124.Fl v 125displays all ICMP error messages. On a busy machine, this output can 126be overbearing. Without the 127.Fl Q 128flag, 129.Nm 130prints out any ICMP error messages caused by its own ECHO_REQUEST 131messages. |
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| 118.It Fl q 119Quiet output. 120Nothing is displayed except the summary lines at startup time and 121when finished. 122.It Fl R 123Record route. 124Includes the 125.Tn RECORD_ROUTE --- 185 unchanged lines hidden (view full) --- 311The maximum IP header length is too small for options like 312.Tn RECORD_ROUTE 313to 314be completely useful. 315There's not much that that can be done about this, however. 316.Pp 317Flood pinging is not recommended in general, and flood pinging the 318broadcast address should only be done under very controlled conditions. | 132.It Fl q 133Quiet output. 134Nothing is displayed except the summary lines at startup time and 135when finished. 136.It Fl R 137Record route. 138Includes the 139.Tn RECORD_ROUTE --- 185 unchanged lines hidden (view full) --- 325The maximum IP header length is too small for options like 326.Tn RECORD_ROUTE 327to 328be completely useful. 329There's not much that that can be done about this, however. 330.Pp 331Flood pinging is not recommended in general, and flood pinging the 332broadcast address should only be done under very controlled conditions. |
| 333.Pp 334The 335.Fl v 336option is not worth much on busy hosts. |
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| 319.Sh SEE ALSO 320.Xr netstat 1 , 321.Xr ifconfig 8 , 322.Xr routed 8 323.Sh HISTORY 324The 325.Nm 326command appeared in 327.Bx 4.3 . | 337.Sh SEE ALSO 338.Xr netstat 1 , 339.Xr ifconfig 8 , 340.Xr routed 8 341.Sh HISTORY 342The 343.Nm 344command appeared in 345.Bx 4.3 . |