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Full Discussion: shell variable access
Top Forums Shell Programming and Scripting shell variable access Post 63216 by sabina on Wednesday 23rd of February 2005 12:00:29 PM
Old 02-23-2005
shell variable access

Hi

I want to do the following:

1. Create a number of Gloabla varibale "ROUTE_IP_xx" based on a counter. As xx sould be from 1-10.

ie ROUTE_IP_1
ROUTE_IP_2
.
.
ROUTE_IP_10

2. I want to initalize all of these variable to 0.0.0.0

ie ROUTE_IP_1='0.0.0.0'

3. I want to be able to access this global variable through out the code.
ie $ROUTE_IP_1

Following is waht I have got. I have generated the GLOBAL variable properly. But I could not figure out how to access them.

Please let me know if you have any suggestion?

Thanks,
Sabina

#!/bin/sh

ROUTE_MAX_NO_OF_ENTRY=10
count=1

while [ $count -le $ROUTE_MAX_NO_OF_ENTRY ]
do
ip_addr=ROUTE_IP_${count}
echo "ip_addr $ip_addr"
export $ip_addr='0.0.0.0'
tmp=`echo '$'$ip_addr`
echo $tmp
count=`expr $count + 1`
done
 

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TPING(1)                                                           LAM COMMANDS                                                           TPING(1)

NAME
tping - Send echo messages to LAM nodes. SYNOPSIS
tping [-hv] [-c count] [-d delay] [-l length] nodes OPTIONS
-h Print the command help menu. -v Turn OFF verbose mode. -c count Send count messages. -d delay Delay delay seconds between each message. -l length Each message is length bytes long. DESCRIPTION
The tping command sends messages to, and collects replies from, a list of nodes, via the LAM echo server. It is similar to the UNIX ping(8) command, and is used as a quick diagnosis of the LAM network. Unless options are specified, tping sends a 1 byte message an infinite number of times, displaying the roundtrip time of each message as it completes, with a delay of 1 second between roundtrips. After the loop is broken (with keyboard interrupt, eg: ^C), tping prints statis- tics about all roundtrip messages. EXAMPLES
tping h Echo messages to the local node. tping -v n7 -l 1000 -c 10 Echo 1000 byte messages to node 7. Stay silent while working. Stop after 10 roundtrips and report statistics. BUGS
There is no built-in timeout and tping will wait forever to receive an echo. If no echo is received, due to a dead link or node, tping hangs. Stop the process with a keyboard suspend signal (eg: ^Z) and terminate LAM with lamhalt(1) or lamwipe(1) (although the use of lamwipe(1) is deprecated). SEE ALSO
lamhalt(1), lamwipe(1) LAM 7.1.4 July, 2007 TPING(1)
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