Aida download monitoring script

aida_download_monitor.sh

#sg
command='curl -O -C - http://www.mpi-inf.mpg.de/yago-naga/aida/download/entity-repository/AIDA_entity_repository_2010-08-17v5-1.sql.bz2'

restarts=0
CLICK_TIME=5
until `$command`;do
    echo "Download stopped!"
    #keep taking snapshots
    if [ `echo "$restart % $CLICK_TIME" | bc` -eq 0 ];then
        cp AIDA_entity_repository_2010-08-17v5-1.sql.bz2 aida_backup
    fi
    echo "Initiating a restart # $restart"
    sleep 1
    let $restart = $restart + 1
done