$ su # aptitude update && aptitude safe-upgrade # aptitude install module-assistant build-essential linux-headers-generic dkms # m-a prepare
# sh /media/cdrom/VBoxLinuxAdditions.run
# reboot
$ id uid=501(sbolay) gid=20(staff) groups=20(staff),12(everyone),61(localaccounts),66(_uucp),79(_appserverusr),80(admin),81(_appserveradm),98(_lpadmin),399(com.apple.access_ssh),33(_appstore),100(_lpoperator),204(_developer),395(com.apple.access_ftp),398(com.apple.access_screensharing)
sbolay@debian:~$ id uid=1000(sbolay) gid=1000(sbolay) groups=1000(sbolay),24(cdrom),25(floppy),29(audio),30(dip),44(video),46(plugdev),108(netdev),111(scanner),115(bluetooth)
# usermod -u 501 sbolay # usermod -a -G vboxsf sbolay