Open or not open, that is the stupid question.

You could use dpkg -P to remove it. e.g. $ 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 +++-==================================-======================-======================-========================================================================= ii virtualbox 4.1.18-dfsg-1ubuntu1.1 amd64 x86 virtualization solution - base binaries $ apt-get remove virtualbox ... $ dpkg -l | grep virtual ... rc virtualbox 4.1.18-dfsg-1ubuntu1.1 amd64 x86 virtualization solution - base binaries rc virtualbox-qt 4.1.18-dfsg-1ubuntu1.1 amd64 x86 virtualization solution - Qt based user interface $ pac...

If you want to get the file list of package which is installed by apt-get. You can use "dpkg" command, Ex. # dpkg -L memcached /. /etc /etc/default /etc/default/memcached /etc/init.d /etc/init.d/memcached /usr /usr/share /usr/share/doc /usr/share/doc/memcached /usr/share/doc/memcached/changelog.gz /usr/share/doc/memcached/NEWS.gz /usr/share/doc/memcached/README /usr/share/doc/memcached/protocol.txt.gz /usr/share/doc/memcached/README.Debian /usr/share/doc/memcached/copyright /usr/share/doc/memcached/changelog.Debian.gz /usr/share/doc/memcached/memory_management.txt.gz /usr/share/memcached /usr/share/memcached/scripts /usr/share/memcached/scripts/start-memcached /usr/share/memcached/scripts/memcached-tool /usr/share/memcached/memcached.conf.default /usr/share/man /usr/share/man/man1 /usr/share/man/man1/memcached.1.gz /usr/bin /usr/bin/memcached /usr/include /usr/include/memcached /usr/include/memcached/protocol_binary.h # Wish this helps. reg...