user@machine:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
bogofilter bogofilter-bdb bogofilter-common libwww-perl
linux-headers-2.6.32-24 linux-headers-2.6.32-24-generic
linux-image-2.6.32-24-generic linux-libc-dev
8 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 43.7MB of archives.
After this operation, 0B of additional disk space will be used.
This operation will require a system restart!