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Re: Re: is there script to detect if remote machine is alive/reachable w/o using Net::Ping?

by perigeeV (Hermit)
on Jun 07, 2002 at 00:41 UTC ( #172402=note: print w/replies, xml ) Need Help??


in reply to Re: is there script to detect if remote machine is alive/reachable w/o using Net::Ping?
in thread is there script to detect if remote machine is alive/reachable w/o using Net::Ping?

Are you on RedHat? iputils-ss001110 uses -t for time-to-live. I've got -w for timeout. Oh well, no matter.


  • Comment on Re: Re: is there script to detect if remote machine is alive/reachable w/o using Net::Ping?

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Re: Re: Re: is there script to detect if remote machine is alive/reachable w/o using Net::Ping?
by Anonymous Monk on Jun 07, 2002 at 05:27 UTC
    tnx very much guys! i really appreciated the help. even though my question was not specific. im really sorry about it. my question shouldve been like this:
    In general IO::Socket process (regardless of which socket and what typ +e of socket to use) what should be the recommended process to detect +if the remote machines are alive/reachable if you dont want to put a +DIE command after the IO::Socket::INET->new() process? (of course, to + avoid HANG and probably you would have other codes to execute after +the socket connect process...)
    The only thing I thought about at that time was PING. And yes I did forget to check the man pages, sorry for that. heres what i did.:
    sub doit { $host="$aa.$bb.$cc.$dd"; $port="23"; $fnd=""; $pong=`ping -c 3 $host -v`; #is there really a "-t" option here? $fnd=($pong=~m/(...)%/gi); $xcd=$1; if ($xcd!=100) { $remote = IO::Socket::INET -> new ( Proto => "tcp", PeerAddr => $host, PeerPort => $port, Timeout => 1 ); $| = 1; if ($remote) { close $remote; print "Socket ready..."; } else { print "Try again!"; } } }
    tnx really a lot for helping me. but i do have one inquiry though. "Is there a way to detect remote machines if they are alive/reachable w/o using NET::Ping and the shell command /sbin/ping?" Hopefully something like a socket command. thank you very much to all those who helped me. Lovelots and *mwah*, Cherry.

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