[TriLUG] Scripting question - Debugging help

[Roy Vestal]

Yeah...sorry I didn't reply...I did screw it up. Had ^M carriage returns 
in it...lol

Robert Dale wrote:
> If you cut-n-pasted the script, the first problem is that I see is 
> that you
> declare a variable "varnum" but never use it and second you use a 
> variable
> "varname" that's never set.
>
> On 9/29/06, Roy Vestal <rvestal at trilug.org> wrote:
>> I'm writing a script that will be run on every machine that has a
>> specific NIC installed. However, I may have more than one. I need to
>> setup ifcfg-ethx "automagically" (no touch script). This is for RHEL4U3
>>
>> Currently, my test machine has 2 identical on board NICs (seen as
>> eth0/1) and 2 add on NICs (eth2/3). Manual setup all cards work. This
>> script is for the addon cards, not the onboards and detects correctly.
>>
>> Here's what I have:
>>
>> #start script
>>
>> varnum=`grep -i "deviceId: 1234" /etc/sysconfig/hwconf -B7 |grep eth
>> |awk {print $2}' | wc -l`
>>
>> for i in $varname; do
>>         ethx=`grep -i "deviceId: 1234" /etc/sysconfig/hwconf -B7 
>> |grep eth |awk
>> '{print $2}'`
>>         netconfig -d $ethx --description="Neterion 612" --bootproto=dhcp
>> done
>>
>> #end script
>>
>> It detects the 2 NIC cards and the wc list shows 2. Good. BUT it only
>> sets up one ifcfg-ethx.
>>
>> Deduction:
>> When the for loop runs, it's either
>>
>> A: Not seeing both cards, i.e. eth2
>> B: Not going through both itterations
>> C: During both itterations, it sees only eth2, never gets to eth3 (what
>> I'm thinking is happening).
>>
>> So, how does one say "ok, you've used this number (i.e. eth2), now look
>> for another (eth3).
>>
>> TIA,
>> Roy
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>
>