2015-09-29 19:52:17 +02:00
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.Dd $Mdocdate: September 29 2015 $
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.Dt ECHOC 1
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.Os
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.Sh NAME
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.Nm echoc
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.Nd send UDP packets to network hosts and wait for replies
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.Sh SYNOPSYS
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.Nm echoc
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.Bk -words
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.Op Fl dv
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.Op Fl c Ar count
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.Op Fl i Ar ms
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.Op Fl l Ar len
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.Op Fl p Ar port
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.Op Fl t Ar ms
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.Ar host
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.Ek
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.Sh DESCRIPTION
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.Nm
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sends UDP packets to the
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.Dv ECHO
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service on the remote
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.Ar host .
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2015-09-30 10:49:06 +02:00
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.Nm
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displays the start/end date of loss of connectivity.
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The options are as follow:
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2015-09-29 19:52:17 +02:00
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.Bl -tag -width Ds
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.It Fl c Ar count
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Stop sending after
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.Ar count
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packets have been sent.
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.It Fl d
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Set the
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.Dv Don't Fragment
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2015-09-30 10:49:06 +02:00
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bit on outgoing datagrams, on systems that allow programs to control it.
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On some systems (MacOSX, OpenBSD) this option will do nothing and the
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generated datagrams will have the DF bit set or not, depending on
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system settings.
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2015-09-29 19:52:17 +02:00
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.It Fl i Ar ms
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wait
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2015-09-30 10:49:06 +02:00
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.Ar ms
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2015-09-29 19:52:17 +02:00
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milliseconds between every packet (default: 100 ms).
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.It Fl l Ar len
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Send packets of length
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.Ar len
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bytes (default: 10).
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.It Fl p Ar port
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Set destination port to
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.Ar port
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(default: 7 - echo).
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.It Fl t Ar ms
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Wait at most
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2015-09-30 10:49:06 +02:00
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.Ar ms
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milliseconds for the reply before declaring the connection dead
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(default: 500ms).
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2015-09-29 19:52:17 +02:00
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.El
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.Sh SEE ALSO
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.Xr nc 1 ,
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.Xr ping 8 ,
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.Xr ping6 8
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.Sh AUTHOR
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The
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.Nm
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utility was written for tetaneutral.net by Matthieu Herrb.
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