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perl redirect output to file ..not working

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Top Forums Shell Programming and Scripting perl redirect output to file ..not working
# 8  
Old 10-17-2008
Quote:
Originally Posted by zedex
unbuffer the output ... with " $| =1 " but even that is not working for infinite while loop if put counter and run loop only 10 times it works.
so rather than using a Net::Ping i am using ping command redirect the o/p to file and search from "time out" which is working fine... any ways thanx for help
Code:
       $|      If set to nonzero, forces a flush right away and after every
               write or print on the currently selected output channel.
               Default is 0 (regardless of whether the channel is really
               buffered by the system or not; $| tells you only whether you've
               asked Perl explicitly to flush after each write).  STDOUT will
               typically be line buffered if output is to the terminal and
               block buffered otherwise.  Setting this variable is useful pri-
               marily when you are outputting to a pipe or socket, such as
               when you are running a Perl program under rsh and want to see
               the output as it's happening.  This has no effect on input
               buffering.  See "getc" in perlfunc for that.  (Mnemonic: when
               you want your pipes to be piping hot.)

MrC
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LEARN ABOUT OPENDARWIN

traceroute6

TRACEROUTE6(8)						    BSD System Manager's Manual 					    TRACEROUTE6(8)

NAME

     traceroute6 -- print the route IPv6 packets will take to the destination

SYNOPSIS

     traceroute6 [-dlnrv] [-f firsthop] [-g gateway] [-m hoplimit] [-p port] [-q probes] [-s src] [-w waittime] target [datalen]

DESCRIPTION

     -d      Debug mode.

     -f firsthop
	     Specify how many hops to skip in trace.

     -g gateway
	     Specify intermediate gateway (traceroute6 uses routing header).

     -m hoplimit
	     Specify maximum hoplimit.

     -l      Print both host hostnames and numeric addresses.  Normally traceroute6 prints only hostnames if -n is not specified, and only numeric
	     addresses if -n is specified.

     -n      Do not resolve numeric address to hostname.

     -p port
	     Set UDP port number to port.

     -q probes
	     Set the number of probe per hop count to probes.

     -r

     -s src  Src specifies the source IPv6 address to be used.

     -v      Be verbose.

     -w waittime
	     Specify the delay time between probes.

RETURN VALUES

     The traceroute6 command will exit with 0 on success, and non-zero on errors.

SEE ALSO

     ping(8), ping6(8), traceroute(8)

HISTORY

     The traceroute6 command first appeared in WIDE hydrangea IPv6 protocol stack kit.

BSD
								   May 17, 1998 							       BSD