man tping (Commandes) - Send echo messages to LAM nodes.
NAME
tping - Send echo messages to LAM nodes.
SYNTAX
OPTIONS
- -h
- Print the command help menu.
- -v
- Turn OFF verbose mode.
- -c <count>
- Send <count> messages.
- -d <delay>
- Delay <delay> seconds between each message.
- -l <length>
- Each message is <length> bytes long.
DESCRIPTION
The tping command sends messages to, and collects replies from, a list of nodes, via the LAM echo server. It is similar to the UNIX ping(8) command, and is used as a quick diagnosis of the LAM network.
Unless options are specified, tping sends a 1 byte message an infinite number of times, displaying the roundtrip time of each message as it completes, with a delay of 1 second between roundtrips. After the loop is broken (with keyboard interrupt, eg: ^C), tping prints statistics about all roundtrip messages.
EXAMPLES
- tping h
- Echo messages to the local node.
- tping -v n7 -l 1000 -c 10
- Echo 1000 byte messages to node 7. Stay silent while working. Stop after 10 roundtrips and report statistics.
BUGS
There is no built-in timeout and tping will wait forever to receive an echo. If no echo is received, due to a dead link or node, tping hangs. Stop the process with a keyboard suspend signal (eg: ^Z) and terminate LAM with lamhalt(1) or lamwipe(1) (although the use of lamwipe(1) is deprecated).