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Full Discussion: Using ping in script
Top Forums Shell Programming and Scripting Using ping in script Post 302611871 by mikez104 on Friday 23rd of March 2012 04:54:37 PM
Old 03-23-2012
Using ping in script
Hi. I have a server with multiple network ports that need to be tested to a list of destinations. I'm trying to write a scripts to automate this but can't seem to get past an error and could use some help.

I have two test files one contains the ip addresses of the onboard NICs and the other text file has the destinations that I am trying to reach. I read the contents of the files it variables then use them in a ping command. Here is the script so far.

Code:
#!/bin/sh
for nic in `cat nic.txt`
do
	for dest in `cat dest.txt`
	do
		echo ping -c2 -I "$nic  $dest"
		ping -c2 -I "$nic  $dest"
	done
echo "" 
done

The echo command prints out the command just as it should be but the actual ping command errors like I'm not using the command correctly. I can even copy what is echoed and paste it and the ping command works correctly.

Any help would be great.

Thanks
Last edited by methyl; 03-23-2012 at 06:05 PM.. Reason: please use code tags
 

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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
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