weird while shellscript problem

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Hi folks

I'm completely lost due to probably I'm missing something but I cannot find 
what is it.
I'm porting an AIX shell script to linux.
It's supposed to run between two hours the user select in a .conf file
which is more or less something like:

min_hour 9

max_hour 11

If the user launch the script at for example 8 it won't run, again, it will 
only run between 9 and 11.

To do that I'm using this piece of code:


MIN_HOUR=0
MAX_HOUR=0
while [ 1 ]
do
      
        if [ "$MAX_HOUR" != "$MIN_HOUR" ]
        then
                while [ $CURRENT_HOUR -lt $MIN_HOUR ] || [ $CURRENT_HOUR -gt 
$MAX_HOUR ]
                do
                        CURRENT_HOUR=`date +"%H"`
                        echo "Waiting to valid time ($MIN_HOUR - $MAX_HOUR, 
current $CURRENT_HOUR)" >> $LOGFILE.err
                        sleep 300
                done
        fi

The problem actually is that if I set an hour which is not between the 
interval the script is allowed to run...I'd run anyways
So the problem is the comparation, I guess...
It runs perfectly in AIX
Any ideas will be apreciated

Thanks
Manuel

-- 
Manuel Arostegui Ramirez.

Electronic Mail is not secure, may not be read every day, and should not
be used for urgent or sensitive issues.


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