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ilo	08-22-2008 10:00 AM

sed or awk

Hello All, I am trying to program a script to change the ip.

I would like that the user enters 67.50.25.25
and since we use /24 masks I can just "calculate" from sed or awk

the gateway 67.50.25.1 the network 67.50.25.0 and the broadcast 67.50.25.255.

Any help would be appreciated.

matthewg42

08-22-2008 10:38 AM

You can do this quite easily with a shell script and internal string manipulation - no need to invoke other processes:

Code:

#!/bin/bash



read -p "enter the IP> " ip

slash24root="${ip%.*}"

gateway="$slash24root.1"

network="$slash24root.0"

broadcast="$slash24root.255"



printf "%-20s = %s\n" "ip" "$ip"

printf "%-20s = %s\n" "gateway" "$gateway"

printf "%-20s = %s\n" "network" "$network"

printf "%-20s = %s\n" "broadcast" "$broadcast"

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