Bash Syntax Check

Hi experts,

I'm working with a bash script which is for the ip-configuration.
So the user can type in his ip and subnetmask and broadcast and networkadress and his Defaultgateway like:

echo "Type in your ip:"
read IP
echo "Type in your Subnetmask:"
read Subnetmask
echo "Type in your Broadcast:"
read Broadcast
echo "Type in your Networkadress:"
read Network
echo "Type in your Defaultgateway:"
read Gateway


So yet i Need a kind of Syntax check or something else so that the defaultgateway is only validate when the Input is
between the Network and the broadcast like this:

Network < Gateway < Broadcast
LVL 5
deibelAsked:
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ozoCommented:
[ $Network -lt $Gateway ] && [ $Gateway -lt $Broadcast ] && echo valid
deibelAuthor Commented:
Ozo Thank you for your help.

I got a Little question how can i use it in a whileloop or in a if else so that the Programm only accept the right Input? So when the Input is worng that the Programm goes to :echo "Type in your Defaultgateway:"
 read Gateway
ozoCommented:
until [ $Network -lt $Gateway ] && [ $Gateway -lt $Broadcast ] ; do
   echo "Type in your Defaultgateway:"
   read Gateway
done

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deibelAuthor Commented:
Ty for your help.
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