Dear Mentors, Suppose : /////////////////////////////////////////////////////////////////////////////////////////// root@debian:/home/mohsen# dpkg -l virtualbox Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-==============-============-============-================================= un virtualbox <none> <none> (no description available) /////////////////////////////////////////////////////////////////////////////////////////////////////// My query means not installed and installed !(ii) When dpkg read it, dpkg read from where? --Regards Mohsen |