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.