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Top Forums Shell Programming and Scripting ksh - how to list all ip address between 2 ip address Post 302324939 by fpmurphy on Friday 12th of June 2009 09:03:29 AM
Old 06-12-2009
If you are using ksh93 you can use the ?: construct to more easily handle the start and end conditions.
Code:
#!/usr/bin/ksh93

START="192.168.7.245"
STOP="192.168.8.5"

integer i j

IFS="." typeset -a aStart=($START)
IFS="." typeset -a aStop=($STOP)

for (( i=${aStart[2]}; i <= ${aStop[2]}; i++ ))
do
    start=$(( i == ${aStart[2]} ? ${aStart[3]} : 0 ))
    stop=$(( i == ${aStop[2]} ? ${aStop[3]} : 254 ))

    for (( j=$start; j <= $stop; j++ ))
    do
       printf "192.168.%d.%d\n" $i $j
    done
done

gives
Code:
192.168.7.245
192.168.7.246
192.168.7.247
192.168.7.248
192.168.7.249
192.168.7.250
192.168.7.251
192.168.7.252
192.168.7.253
192.168.7.254
192.168.8.0
192.168.8.1
192.168.8.2
192.168.8.3
192.168.8.4
192.168.8.5

 

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tgt-setup-lun(8)					      System Manager's Manual						  tgt-setup-lun(8)

NAME
tgt-setup-lun - creates a target, adds a device to the target and defines initiators that can connect to the target SYNOPSIS
tgt-setup-lun -d device -n target_name [initiator_IP1 initiator_IP2 ...] [-h] DESCRIPTION
Starts tgtd if necessary and creates a target according to the supplied target_name. The format of the target name is as follows: iqn.2001-04.com.<hostname>-<target_name> The target name must be unique. The script then adds the requested device to the target. If specific IP addresses are defined, it adds them to the list of allowed initia- tors for that target. If no IP addresses is defined, it defines that the target accepts any initiator. EXAMPLES
Create a target that uses /dev/sdb1 and allows connections only from 192.168.10.81: tgt-setup-lun -d /dev/sdb1 -n my_target 192.168.10.81 Create a target that uses /dev/sdb1 and allows connections only from 192.168.10.81 and 192.168.10.82: tgt-setup-lun -d /dev/sdb1 -n my_target 192.168.10.81 192.168.10.82 Create a target that uses /dev/sdb1 and allows connections from any initiator: tgt-setup-lun -d /dev/sdb1 -n my_target Display help: tgt-setup-lun -h AUTHOR
Written by Erez Zilber REPORTING BUGS
Report bugs to <stgt@vger.kernel.org> COPYRIGHT
Copyright (C) Voltaire Ltd. 2008. tgt-setup-lun(8)
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