I use the script below to see my own IP from bash script:
It will show your IP. If my IP is something like 192.168.1.5, it has to ping every addres in the 192.168.1.* segment.
This script must also ping every address when I am also in a different segment like 192.1.1.*
How can I accomplish that?
---------- Post updated at 06:55 AM ---------- Previous update was at 06:18 AM ----------
The above will only grep the whole ip. I want to grep 192.168.1.
Only the first 3 adresses. The last one will be filled in by a sequence {1..255}
The question is how to grep the first 3 numbers. now it is 192.168.1 but on a different subnet it could be something like 10.1.1.*
Last edited by Scott; 04-11-2011 at 08:52 AM..
Reason: Code tags
Alright, I have being checking out various posting here trying to hack together something for a friend
Needed:
A script that can run in cron doing:
ping of several hosts and notifying via email when they are unavailable.
I am not going to post my non working messes (I am a basic... (11 Replies)
I have Digital UNIX V4.0B (Rev. 564) on alpha machine.
I'm trying to acces network in subnet (192.168.1.x).
Ip on Alpha comp. is from 192.168.3.X subnet. My default gateway on this network is 192.168.3.1 and it working OK from other machines. This machine is visible from same subnet... (2 Replies)
Hi,
My project needs to migrate the existing Subnet (255.255.255.0) to a new subnet and change the ipaddresses (currently C class). How can I do that. I need some information.
John (0 Replies)
Hello:
I have this script:
#!/bin/bash
#for loop
for ip in `cat ips`
do
ping $ip | grep "is alive">>pingtestlog
done
And its working properly with this input:
ericadm@amxcruas1> cat ips
10.196.60.4
10.196.61.210
10.196.62.73
10.196.61.152 (5 Replies)
Hello All,
We have added a windows host and its config files to Nagios master server and wanted to do a ping check alone at the moment however, the nagios master server identifies the host in its GUI and immediately disappears can anyone let me know the right approach to this one, We want to... (2 Replies)
HI,
I have a file serverlist in that all host names are placed.
i have written a small script
#./testping
#! /bin/bash
for i in `cat serverlist`
do
ping $i >> output.txt
done
so now it creates a file output.txt till here fine..
now each time i run this script the output file... (4 Replies)
Hi all,
New to this forum.
I have just been reading through a historical thread about some issues with IPMP.
Some tips from "Peasant" where very useful. Please see below
"Just couple of more hints regarding VM.
For VDS, use one VDS - one guest LDOM, don't put everything in primary-vds.... (9 Replies)
Bash script to subdivide a given subnet into a pre-defined number of smaller subnets. Show network/broadcast address, number of hosts and assign gateway.
For example:
Input:
./subnetter.sh 192.168.0.0/24 3 Output:
192.168.0.0/128 subnet 192.168.0.0 broadcast 192.168.0.127 gateway... (1 Reply)
Bash script to subdivide a given subnet into a pre-defined number of smaller subnets. Show network/broadcast address, number of hosts and assign gateway.
For example:
Input:
./subnetter.sh 192.168.0.0/24 3 Output:
192.168.0.0/128 subnet 192.168.0.0 broadcast 192.168.0.127 gateway... (1 Reply)
Running 3650 switch. I have this odd issue where I cannot get 4 new Centos 7 boxes pinging out on public IPs (nor pinging in), only gateway .1 and first public IP .2
This is what I see, which doesn't look normal. How do I fix this?
The server itself is configured fine (Centos 7)
# cat... (0 Replies)
Discussion started by: Bashed
0 Replies
LEARN ABOUT FREEBSD
tcpdrop
TCPDROP(8) BSD System Manager's Manual TCPDROP(8)NAME
tcpdrop -- drop TCP connections
SYNOPSIS
tcpdrop local-address local-port foreign-address foreign-port
tcpdrop [-l] -a
DESCRIPTION
The tcpdrop command may be used to drop TCP connections from the command line.
If -a is specified then tcpdrop will attempt to drop all active connections. The -l flag may be given to list the tcpdrop invocation to drop
all active connections one at a time.
If -a is not specified then only the connection between the given local address local-address, port local-port, and the foreign address
foreign-address, port foreign-port, will be dropped.
Addresses and ports may be specified by name or numeric value. Both IPv4 and IPv6 address formats are supported.
The addresses and ports may be separated by periods or colons instead of spaces.
EXIT STATUS
The tcpdrop utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
If a connection to httpd(8) is causing congestion on a network link, one can drop the TCP session in charge:
# sockstat -c | grep httpd
www httpd 16525 3 tcp4
192.168.5.41:80 192.168.5.1:26747
The following command will drop the connection:
# tcpdrop 192.168.5.41 80 192.168.5.1 26747
The following command will drop all connections but those to or from port 22, the port used by sshd(8):
# tcpdrop -l -a | grep -vw 22 | sh
SEE ALSO netstat(1), sockstat(1)AUTHORS
Markus Friedl <markus@openbsd.org>
Juli Mallett <jmallett@FreeBSD.org>
BSD January 30, 2013 BSD