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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 DEBIAN

rping

RPING(1)							     librdmacm								  RPING(1)

NAME

       rping - RDMA CM connection and RDMA ping-pong test.

SYNOPSIS

       rping -s [-v] [-V] [-d] [-P] [-a address] [-p port]
		 [-C message_count] [-S message_size]
       rping -c [-v] [-V] [-d] -a address [-p port]
		 [-C message_count] [-S message_size]

DESCRIPTION

       Establishes  a  reliable  RDMA connection between two nodes using the librdmacm, optionally performs RDMA transfers between the nodes, then
       disconnects.

OPTIONS

       -s     Run as the server.

       -c     Run as the client.

       -a address
	      On the server, specifies the network address to bind the connection to.  On the client, specifies the server address to connect to.

       -p     Port number for listening server.

       -v     Display ping data.

       -V     Validate ping data.

       -d     Display debug information.

       -C message_count
	      The number of messages to transfer over each connection.	(default infinite)

       -S message_size
	      The size of each message transferred, in bytes.  (default 100)

       -P     Run the server in persistent mode.  This allows multiple rping clients to connect to a single server instance. The server  will  run
	      until killed.

NOTES

       Because	this  test maps RDMA resources to userspace, users must ensure that they have available system resources and permissions.  See the
       libibverbs README file for additional details.

SEE ALSO

       rdma_cm(7), ucmatose(1), udaddy(1), mckey(1)

librdmacm							    2007-05-15								  RPING(1)