02-23-2012
Help with Bash piped while-read and a read user input at the same time
Hi
I am new to writing script and want to use a Bash Piped while-read and read from user input.
if something happens on server.log then do while loop or if something happend on user input then do while loop.
Pseudocode something like:
tail -n 3 -f server.log | while read serverline || read -p # -e promptline
do
if something happend on promptline then do this
if something happend serverline then do this
I appreciate all help.
Thanks
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LEARN ABOUT DEBIAN
sys::statistics::linux::netstats
Sys::Statistics::Linux::NetStats(3pm) User Contributed Perl Documentation Sys::Statistics::Linux::NetStats(3pm)
NAME
Sys::Statistics::Linux::NetStats - Collect linux net statistics.
SYNOPSIS
use Sys::Statistics::Linux::NetStats;
my $lxs = Sys::Statistics::Linux::NetStats->new;
$lxs->init;
sleep 1;
my $stat = $lxs->get;
Or
my $lxs = Sys::Statistics::Linux::NetStats->new(initfile => $file);
$lxs->init;
my $stat = $lxs->get;
DESCRIPTION
Sys::Statistics::Linux::NetStats gathers net statistics from the virtual /proc filesystem (procfs).
For more information read the documentation of the front-end module Sys::Statistics::Linux.
NET STATISTICS
Generated by /proc/net/dev.
rxbyt - Number of bytes received per second.
rxpcks - Number of packets received per second.
rxerrs - Number of errors that happend while received packets per second.
rxdrop - Number of packets that were dropped per second.
rxfifo - Number of FIFO overruns that happend on received packets per second.
rxframe - Number of carrier errors that happend on received packets per second.
rxcompr - Number of compressed packets received per second.
rxmulti - Number of multicast packets received per second.
txbyt - Number of bytes transmitted per second.
txpcks - Number of packets transmitted per second.
txerrs - Number of errors that happend while transmitting packets per second.
txdrop - Number of packets that were dropped per second.
txfifo - Number of FIFO overruns that happend on transmitted packets per second.
txcolls - Number of collisions that were detected per second.
txcarr - Number of carrier errors that happend on transmitted packets per second.
txcompr - Number of compressed packets transmitted per second.
ttpcks - Number of total packets (received + transmitted) per second.
ttbyt - Number of total bytes (received + transmitted) per second.
METHODS
new()
Call "new()" to create a new object.
my $lxs = Sys::Statistics::Linux::NetStats->new;
Maybe you want to store/load the initial statistics to/from a file:
my $lxs = Sys::Statistics::Linux::NetStats->new(initfile => '/tmp/netstats.yml');
If you set "initfile" it's not necessary to call sleep before "get()".
It's also possible to set the path to the proc filesystem.
Sys::Statistics::Linux::NetStats->new(
files => {
# This is the default
path => '/proc',
netdev => 'net/dev',
}
);
init()
Call "init()" to initialize the statistics.
$lxs->init;
get()
Call "get()" to get the statistics. "get()" returns the statistics as a hash reference.
my $stat = $lxs->get;
raw()
The same as get_raw() but it's not necessary to call init() first.
get_raw()
Call "get_raw()" to get the raw data - no deltas.
EXPORTS
No exports.
SEE ALSO
proc(5)
REPORTING BUGS
Please report all bugs to <jschulz.cpan(at)bloonix.de>.
AUTHOR
Jonny Schulz <jschulz.cpan(at)bloonix.de>.
COPYRIGHT
Copyright (c) 2006, 2007 by Jonny Schulz. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.14.2 2012-03-09 Sys::Statistics::Linux::NetStats(3pm)