Ping inside FOR loop Post: 302477465

10 More Discussions You Might Find Interesting

1. IP Networking

ping loop

i need to write a script that can loop through ej.192.162.0.0 to 192.162.0.256 find the ones that are connected and the ones not connected write the name , ip address and connection status of each one in a file to later use it in perl to create a web page with the information thanks guys

2. Shell Programming and Scripting

help: infinant loop script - host ping test

need to check on some hosts and send an email if there status changes I wanna put together a script in bash that will allow me to check the up/down state of a single host via ping i want it to run in a continuous loop so I can just fire the script and forget about it(dont want cron to drive...

3. Shell Programming and Scripting

variable inside variable inside loop headache

Hi Gurus I have a file called /tmp/CMDB which looks like this serial: 0623AN1208 hostname: server1 model: x4100 assetID: 1234 I am writing a for loop that will go through this file line by line creating a variable of itself. Using the first iteration of the loop (i.e. the first line) as...

4. Shell Programming and Scripting

Using variables created sequentially in a loop while still inside of the loop [bash]

I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends. As an example I've written a script called question (The fist command is to show what is the contents of the...

5. Shell Programming and Scripting

Using 'su' inside a loop

Hi, I am using su within a for loop. As you might expect, it prompts for password during each loop execution. Here is my piece of code: for i in $LIST do if then DATABASE=`echo $i | awk -F "|" '{ print $1 }'` USER_ID=`echo $i | awk -F "|" '{ print $2 }'` su - apstage -c...

6. Shell Programming and Scripting

BASH loop inside a loop question

Hi all Sorry for the basic question, but i am writing a shell script to get around a slightly flaky binary that ships with one of our servers. This particular utility randomly generates the correct information and could work first time or may work on the 12th or 100th attempt etc !....

7. Programming

Perl Ping Loop

Hi All i have an issue with ping, we are using dhcp and so if the machine has been offline and i ping it, i get " ping: unknown host <hostname> is there a way i can stick a loop somewhere so it would keep trying when it got the unknown host error and then when the machine came back online...

8. Shell Programming and Scripting

If inside If loop

Hi All, Below is the very simple code snippet but it si giving me syntax error #!/bin/bash #To ensure If JMS directory exists or not ServerName=$(hostname) #To ensure If JMS directory exists or not echo $ServerName if ; then echo "Inside First If" if ; then echo 'JMS...

9. UNIX for Dummies Questions & Answers

Write a while loop inside for loop?

I'm taking a unix class and need to countdown to 0 from whatever number the user inputs. I know how to do this with a while or until loop but using the for loop is throwing me off.... I know I can use an if-then statement in my for loop but can I include a while loop in my for loop?

10. IP Networking

Loop in /24 Subnet, No ping beyond .1 and .2

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...

LEARN ABOUT DEBIAN

rds-ping

RDS-PING(1)						    BSD General Commands Manual 					       RDS-PING(1)

NAME

     rds-ping -- test reachability of remote node over RDS

SYNOPSIS

     rds-ping [-c count] [-i interval] [-I local_addr] remote_addr

DESCRIPTION

     rds-ping is used to test whether a remote node is reachable over RDS.  Its interface is designed to operate pretty much the standard ping(8)
     utility, even though the way it works is pretty different.

     rds-ping opens several RDS sockets and sends packets to port 0 on the indicated host. This is a special port number to which no socket is
     bound; instead, the kernel processes incoming packets and responds to them.

OPTIONS

     The following options are available for use on the command line:

     -c count
	     Causes rds-ping to exit after sending (and receiving) the specified number of packets.

     -I address
	     By default, rds-ping will pick the local source address for the RDS socket based on routing information for the destination address
	     (i.e. if packets to the given destination would be routed through interface ib0, then it will use the IP address of ib0 as source
	     address).	Using the -I option, you can override this choice.

     -i timeout
	     By default, rds-ping will wait for one second between sending packets. Use this option to specified a different interval. The timeout
	     value is given in seconds, and can be a floating point number. Optionally, append msec or usec to specify a timeout in milliseconds
	     or microseconds, respectively.
     Specifying a timeout considerably smaller than the packet round-trip time will produce unexpected results.

AUTHORS

     rds-ping was written by Olaf Kirch <olaf.kirch@oracle.com>.

SEE ALSO

     rds(7), rds-info(1), rds-stress(1).

BSD
								   Apr 22, 2008 							       BSD

10 More Discussions You Might Find Interesting

1. IP Networking

ping loop

Discussion started by: djbilly

2. Shell Programming and Scripting

help: infinant loop script - host ping test

Discussion started by: zeekblack

3. Shell Programming and Scripting

variable inside variable inside loop headache

Discussion started by: hcclnoodles

4. Shell Programming and Scripting

Using variables created sequentially in a loop while still inside of the loop [bash]

Discussion started by: DeCoTwc