当我打字
aptitude dist-upgrade
我得到例如：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
The following NEW packages will be installed:
bc{a} linux-image-2.6.32-24-virtual linux-image-2.6.32-308-ec2
The following packages will be upgraded:
apt apt-transport-https apt-utils base-files bijk-node binutils cloud-init grub-common grub-pc icedtea-6-jre-cacao ifupdown landscape-client landscape-common
libfreetype6 libfreetype6-dev libgssapi-krb5-2 libk5crypto3 libkrb5-3 libkrb5support0 libldap-2.4-2 libmysqlclient16 libpcsclite1 libsmbclient libudev0
libusb-0.1-4 libwbclient0 libwww-perl lintian linux-ec2 linux-image-ec2 linux-image-virtual linux-libc-dev linux-virtual mountall mysql-client-5.1
mysql-client-core-5.1 mysql-common mysql-server mysql-server-5.1 mysql-server-core-5.1 openjdk-6-jre …