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John Chambers <jc at trillian.mit.edu> writes: > One fun thing that I did once that was really useful: I hacked the > ping to run in "pipe" mode, where it accepted hosts (names or > addresses) on stdin, pinged them all, and wrote to stdout whenever it > got a reply. This could be used as a subprocess from a parent that > wants to ping a lot of hosts, and it only needs to start one > subprocess. Maybe I should hack the linux ping to work this way. Now > that linux is taking over the world, I may not need to do it on other > kinds of machines in the future ... Scary -- I wrote a program *exactly* like this a number of years ago. I was writing Java network code, and I needed a way to efficiently keep track of the reachability status of potentially thousands of hosts. I even started to port this code to win32 (where raw socket access has always been....painful), but then politics killed my project. Unfortunately, I don't think that I have this code anymore. But this type of program isn't too hard to write, and I think that it is a good way to solve this type of problem. Regards, --kevin -- Kevin D. Clark / Cetacean Networks / Portsmouth, N.H. (USA) cetaceannetworks.com!kclark (GnuPG ID: B280F24E) alumni.unh.edu!kdc
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