shell variable access

sabina · #1 (**permalink**) 02-23-2005

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

jim mcnamara · #2 (**permalink**) 02-23-2005

Try an array:

Code:

#!/bin/ksh

ROUTE_MAX_NO_OF_ENTRY=10

# make an array with 11 (0 thru 10) elements use the last ten 
# elements

set -A ip_addr \
 '0.0.0.0' \
 '0.0.0.0' \
 '0.0.0.0' \
 '0.0.0.0' \
 '0.0.0.0' \
 '0.0.0.0' \
 '0.0.0.0' \
 '0.0.0.0' \
 '0.0.0.0' \
 '0.0.0.0' \
 '0.0.0.0'
 
# print the array 

integer i=0
while (( i <=  ${#ip_addr[*]} ))
do 
    print "ip_addr[$i]= ${ip_addr[i]}"
    let i=i+1
done

sabina · #3 (**permalink**) 02-24-2005

Hi jim

Thanks for you reply.

I forgot to mention in my request that I am using Bourne shell and I guess arrays are not implemented in bourne shell.

Thanks,
Sabina

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