POOLDIR
    Directory where pool files are placed on hard drive.
    In Default setup you can find the directory in file /etc/bareos/bareos-sd.d/device/FileStorage.conf
        
MYSQL_USER
    Username for MySQL Connection
        
MYSQL_PASSWORD
    Password for MySQL Connection

-e
    delete empty (JobBytes=0) jobs
-p
    prune all volumes
-t
    update all volumes to "actiononpurge=Truncate"
-n
    update all volumes to "actiononpurge=None"
-Dc
    delete all jobs that have a copy job
-Do
    delete obsolete volume files from the disk (those not listed in catalog)
    NOTE: this operation can take several minutes to complete
-Dp
    delete all purged volumes from Bacula catalog
-h
    print this screen