On Sat, 3 Mar 2012, Dale Snell wrote:
> First thing I'd do is put quotes around the variables in the test:
>
> if [ "$NEWIP" != "$OLDIP" ]; then
Dale,
Done.
> Second thing would be to put some rudimentary error checking ahead
> of the test, after $NEWIP is set:
>
> if [ -z "$NEWIP" ]; then
> echo "FATAL: curl did not return a new IP"
> exit 2
> fi
Done.
> Third, run the script with the -x flag:
> $ bash -x ngetip.sh
> This puts bash in xtrace mode, which makes debugging much easier. It will
> let you see what is being returned for $NEWIP. Once you know that, you
> can set up your input filtering. Or you could simply add echo statements
> in strategic locations. Whatever works for you.
Errors checking for the current IP address have happened only 4 or 5
times since the switch to DHCP. No way to predict when it happens. And, when
it does occur, the next check (in 15 minutes) works properly.
Thanks,
Rich
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