Ping all the IP addresses in a file

grahamb314 · 08-23-2013, 03:07 PM

I have a file that looks like this:

Code:

 1:  192.168.1.1 (192.168.1.1)                      0.691ms
 1:  192.168.1.2 (192.168.1.2)                      0.279ms
 2:  12.213.12.123 (12.213.12.123)                          1.385ms
 3:  45.213.12.221 (45.213.12.221)                         11.334ms

I want to run a script which will ping all the ip addresses in the brackets, one at a time and save to a file.

I know how to ping and save to a file, but I dont know how I can get the IP addresses from this file into an array or do some kind of regex loop?

Thanks for your help

firstfire · 08-23-2013, 03:40 PM

Hi.

You may try something like this:

Code:

$ while  IFS='()' read _ IP _; do echo IP=$IP; done < in
IP=192.168.1.1
IP=192.168.1.2
IP=12.213.12.123
IP=45.213.12.221

where `in' -- is the input file.

bonnydeal · 09-04-2013, 06:21 AM

To get all the ip addresses

Code:

awk '{print $2}' $INPUTFILE

You could then put the output in a loop

Code:

awk '{print $2}' $INPUTFILE | while read ip
do
     ping -c 3 $ip
done

don't forget the -c to specify a ping count...
I suggest you specify a max wait time too.

hybby · 09-05-2013, 06:32 PM

in perl. also selects the value in the brackets just for fun

Code:

#!/usr/bin/perl

use strict;
use warnings;

use Net::Ping;

my $pingtest  = Net::Ping->new();
my $inputfile = $ARGV[0];

open(my $fh,"<",$inputfile);

while (<$fh>) {
  if ($_ =~ /\((\d+\.\d+\.\d+\.\d+)\)/) {
    my $ip = $1;
    if ($pingtest->ping($ip)) {
      print "$ip is up!\n";      
    } else {
      print "$ip is down...\n";
    }   
  }
}

output:

Code:

drew@balveda$ /tmp/mping /tmp/ips
192.168.1.1 is down...
192.168.1.2 is down...
12.213.12.123 is up!
45.213.12.221 is down...
192.168.0.1 is up!