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Full Discussion: Network related script
Top Forums Shell Programming and Scripting Network related script Post 302914792 by Chubler_XL on Thursday 28th of August 2014 12:25:12 AM
Old 08-28-2014
You could try something like this:

Code:
#!/bin/bash

upcnt=0
downcnt=0
for ip in 192.168.1.{3..19}
do
   if ping -c 1 -W 1 $ip > /dev/null
   then
        let upcnt=upcnt+1
        uplist="$uplist\n    $ip"
   else
        let downcnt=downcnt+1
        downlist="$downlist\n    $ip"
   fi
done

printf "$upcnt ips are available:$uplist\n"
printf "$downcnt ips are not available:$downlist\n"

Note: if not response from a server it will wait up to 1 second to be sure server is unreachable - so maximum runtime should be close to 17 seconds.
This User Gave Thanks to Chubler_XL For This Post:
kannansoft1985
 

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LEARN ABOUT DEBIAN

polygraph

POLYGRAPH(7)							   User Commands						      POLYGRAPH(7)

NAME

       Polygraph - performance benchmark for web intermediaries

DESCRIPTION

       Web  Polygraph is a performance testing tool for caching proxies, origin server accelerators, L4/7 switches, content filters, and other Web
       intermediaries. Polygraph's features include:

	 * high-performance HTTP clients and servers
	 * realistic HTTP, FTP, and SSL traffic generation
	 * HTTP Basic, NTLM, and Negotiate proxy authentication
	 * LDAP-friendly generation of user credentials
	 * flexible content simulation
	 * ready-to-use standard workloads for benchmarking
	 * powerful domain-specific configuration language
	 * portable open-source implementation
	 * friendly commercial support

       Web Polygraph consists of many tools listed below. See individual man pages for more information. Detailed documentation  is  available	at
       www.web-polygraph.org.

       polygraph-aka - IP aliases manipulation tool

       polygraph-beepmon - forwards BEEP messages to an external program

       polygraph-cdb - content database manipulation tool

       polygraph-client - Web Polygraph client simulator

       polygraph-cmp-lx - log comparison tool

       polygraph-distr-test - distribution test

       polygraph-dns-cfg - DNS server configuration tool

       polygraph-lr - console log extractor

       polygraph-ltrace - trace extractor

       polygraph-lx - stats extractor

       polygraph-pgl2acl - translates PGL access rules into Squid Proxy ACLs

       polygraph-pgl2eng - PGL to English converter

       polygraph-pgl2ips - PGL IP addresses calculator

       polygraph-pgl2ldif - LDIF (and other text-based) configuration generator

       polygraph-pgl-test - PGL validator

       polygraph-pmix2-ips - PolyMix-2 address calculator

       polygraph-pmix3-ips - PolyMix-3 address calculator

       polygraph-polymon - interactive test monitoring tool

       polygraph-polyprobe - tests TCP throughput in a full client/server mesh

       polygraph-polyrrd - supplies run-time Polygraph stats to RRDtool

       polygraph-pop-test - predicts cache hit ratios for a given workload

       polygraph-reporter - HTML report generator

       polygraph-rng-test - random number generator test

       polygraph-server - Web Polygraph server simulator

       polygraph-udp2tcpd - converts UDP monitoring messages into a TCP stream read by polymon

       polygraph-webaxe4-ips - WebAxe-4 address calculator

COPYRIGHT

       Copyright (C) 2003-2006 The Measurement Factory, Inc.

SEE ALSO

       polygraph-aka(1),    polygraph-beepmon(1),    polygraph-cdb(1),	  polygraph-client(1),	  polygraph-cmp-lx(1),	  polygraph-distr-test(1),
       polygraph-dns-cfg(1),	polygraph-lr(1),     polygraph-ltrace(1),     polygraph-lx(1),	   polygraph-pgl2acl(1),     polygraph-pgl2eng(1),
       polygraph-pgl2ips(1),  polygraph-pgl2ldif(1),  polygraph-pgl-test(1), polygraph-pmix2-ips(1), polygraph-pmix3-ips(1), polygraph-polymon(1),
       polygraph-polyprobe(1), polygraph-polyrrd(1),  polygraph-pop-test(1),  polygraph-reporter(1),  polygraph-rng-test(1),  polygraph-server(1),
       polygraph-udp2tcpd(1), polygraph-webaxe4-ips(1)

       http://www.web-polygraph.org/ - project web site

Web Polygraph							   February 2010						      POLYGRAPH(7)
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