咋没有系统优化相关的话题？那么我在这里问个问题

[转角遇到鬼]

查看安装软件时下载包的临时存放目录

ls /var/cache/apt/archives

然后终端里面显示出如下红色字符的信息：

adduser_3.110ubuntu7_all.deb
amule_2.2.6-0ubuntu1_i386.deb
amule-common_2.2.6-0ubuntu1_all.deb
amule-utils_2.2.6-0ubuntu1_i386.deb
apparmor_2.3.1+1403-0ubuntu27.3_i386.deb
apparmor-utils_2.3.1+1403-0ubuntu27.3_i386.deb
app-install-data-partner_12.9.10.2_all.deb
apport_1.9.3-0ubuntu4.2_all.deb
apport-gtk_1.9.3-0ubuntu4.2_all.deb
avahi-autoipd_0.6.25-1ubuntu5.1_i386.deb
avahi-daemon_0.6.25-1ubuntu5.1_i386.deb
bind9-host_1%3a9.6.1.dfsg.P1-3ubuntu0.3_i386.deb
binutils_2.20-0ubuntu2_i386.deb
brasero_2.28.2-0ubuntu1_i386.deb
bsd-mailx_8.1.2-0.20081101cvs-2ubuntu1_i386.deb
checkbox_0.8.6_all.deb
checkbox-gtk_0.8.6_all.deb
compizconfig-settings-manager_0.8.2-0ubuntu1_all.deb
convert-pgn_0.20.4-2ppa1_i386.deb
cpp-4.4_4.4.1-4ubuntu9_i386.deb
cups_1.4.1-5ubuntu2.1_i386.deb
cups-bsd_1.4.1-5ubuntu2.1_i386.deb
cups-client_1.4.1-5ubuntu2.1_i386.deb
cups-common_1.4.1-5ubuntu2.1_all.deb
cycle_0.3.1-7_all.deb
devicekit-disks_007-2ubuntu4_i386.deb
dnsutils_1%3a9.6.1.dfsg.P1-3ubuntu0.3_i386.deb
eleeye_0.20.4-2ppa1_i386.deb
emesene_1.5-1ubuntu1_all.deb
empathy-doc_2.28.1.1-0ubuntu1_all.deb
evince_2.28.1-0ubuntu1.2_i386.deb
evolution-common_2.28.1-0ubuntu2_all.deb
exim4_4.69-11ubuntu4_all.deb
exim4-base_4.69-11ubuntu4_i386.deb
exim4-config_4.69-11ubuntu4_all.deb
exim4-daemon-light_4.69-11ubuntu4_i386.deb
firefox-3.5_3.5.7+nobinonly-0ubuntu0.9.10.1_i386.deb
firefox_3.5.7+nobinonly-0ubuntu0.9.10.1_all.deb
firefox-3.5-branding_3.5.7+nobinonly-0ubuntu0.9.10.1_i386.deb
firefox-3.5-gnome-support_3.5.7+nobinonly-0ubuntu0.9.10.1_i386.deb
firefox-gnome-support_3.5.7+nobinonly-0ubuntu0.9.10.1_all.deb
flashplugin-installer_10.0.42.34ubuntu0.9.10.1_i386.deb
f-spot_0.6.1.5-0ubuntu1_i386.deb
fuse-utils_2.7.4-1.1ubuntu4.1_i386.deb
gcalctool_5.28.2-0ubuntu1_i386.deb
gcc-4.4_4.4.1-4ubuntu9_i386.deb
gcc-4.4-base_4.4.1-4ubuntu9_i386.deb
gdm_2.28.1-0ubuntu2.1_i386.deb
gimp_2.6.7-1ubuntu1.1_i386.deb
gimp-data_2.6.7-1ubuntu1.1_all.deb
gimp-help-common_2.4.1-2_all.deb
gimp-help-en_2.4.1-2_all.deb
gmchess_0.20.2-0ubuntu1_i386.deb
gmchess_0.20.4-2ppa1_i386.deb
gnome-about_1%3a2.28.1-0ubuntu3_all.deb
gnome-desktop-data_1%3a2.28.1-0ubuntu3_all.deb
gnome-screensaver_2.28.0-0ubuntu3.3_i386.deb
gnome-settings-daemon_2.28.1-0ubuntu2_i386.deb
gnome-user-guide-en_2.28.0+git20090921ubuntu2_all.deb
gnome-user-guide-zh_2.28.0+git20090921ubuntu2_all.deb
grub-common_1.97~beta4-1ubuntu4.1_i386.deb
grub-pc_1.97~beta4-1ubuntu4.1_i386.deb
gstreamer0.10-alsa_0.10.25-2ubuntu1.2_i386.deb
gstreamer0.10-plugins-base_0.10.25-2ubuntu1.2_i386.deb
gstreamer0.10-plugins-base-apps_0.10.25-2ubuntu1.2_i386.deb
gstreamer0.10-x_0.10.25-2ubuntu1.2_i386.deb
gtk2-engines_1%3a2.18.4-1ubuntu2_i386.deb
gtk2-engines-murrine_0.90.3-1ubuntu2_i386.deb
gtk2-engines-pixbuf_2.18.3-1ubuntu2.1_i386.deb
gzip_1.3.12-8ubuntu1.1_i386.deb
ibus_1.2.0.20090927-2ubuntu2_i386.deb
ibus-gtk_1.2.0.20090927-2ubuntu2_i386.deb
ibus-pinyin_1.2.0.20090617+1-1ubuntu2_all.deb
ibus-table-wubi_1.2.0.20090715-1ubuntu1_all.deb
initscripts_2.87dsf-4ubuntu12_i386.deb
jockey-common_0.5.5-0ubuntu3_all.deb
jockey-gtk_0.5.5-0ubuntu3_all.deb
kerneloops-daemon_0.12+git20090217-1ubuntu4.1_i386.deb
language-pack-gnome-zh-hans_1%3a9.10+20091022_all.deb
language-pack-gnome-zh-hans-base_1%3a9.10+20091022_all.deb
language-pack-zh-hans_1%3a9.10+20091022_all.deb
language-pack-zh-hans-base_1%3a9.10+20091022_all.deb
language-support-fonts-zh-hans_1%3a9.10+20090909.1_all.deb
language-support-input-zh-hans_1%3a9.10+20090917_all.deb
libapparmor1_2.3.1+1403-0ubuntu27.3_i386.deb
libapparmor-perl_2.3.1+1403-0ubuntu27.3_i386.deb
libasound2_1.0.20-3ubuntu6.1_i386.deb
libavahi-client3_0.6.25-1ubuntu5.1_i386.deb
libavahi-common3_0.6.25-1ubuntu5.1_i386.deb
libavahi-common-data_0.6.25-1ubuntu5.1_i386.deb
libavahi-core6_0.6.25-1ubuntu5.1_i386.deb
libavahi-glib1_0.6.25-1ubuntu5.1_i386.deb
libavahi-gobject0_0.6.25-1ubuntu5.1_i386.deb
libavahi-ui0_0.6.25-1ubuntu5.1_i386.deb
libbind9-50_1%3a9.6.1.dfsg.P1-3ubuntu0.3_i386.deb
libbrasero-media0_2.28.2-0ubuntu1_i386.deb
libc6_2.10.1-0ubuntu16_i386.deb
libc6-dev_2.10.1-0ubuntu16_i386.deb
libc6-i686_2.10.1-0ubuntu16_i386.deb
libc-bin_2.10.1-0ubuntu16_i386.deb
libc-dev-bin_2.10.1-0ubuntu16_i386.deb
libclutter-gtk-0.10-0_0.10.2-0ubuntu2_i386.deb
libcrypto++8_5.6.0-3_i386.deb
libcups2_1.4.1-5ubuntu2.1_i386.deb
libcupscgi1_1.4.1-5ubuntu2.1_i386.deb
libcupsdriver1_1.4.1-5ubuntu2.1_i386.deb
libcupsimage2_1.4.1-5ubuntu2.1_i386.deb
libcupsmime1_1.4.1-5ubuntu2.1_i386.deb
libcupsppdc1_1.4.1-5ubuntu2.1_i386.deb
libdb4.6_4.6.21-13ubuntu2_i386.deb
libdns50_1%3a9.6.1.dfsg.P1-3ubuntu0.3_i386.deb
libdns53_1%3a9.6.1.dfsg.P1-3ubuntu0.3_i386.deb
libempathy30_2.28.1.1-0ubuntu1_i386.deb
libempathy-common_2.28.1.1-0ubuntu1_all.deb
libempathy-gtk28_2.28.1.1-0ubuntu1_i386.deb
libempathy-gtk-common_2.28.1.1-0ubuntu1_all.deb
libenchant1c2a_1.5.0-0ubuntu3_i386.deb
libeval0_0.20.4-2ppa1_i386.deb
libevdocument1_2.28.1-0ubuntu1.2_i386.deb
libevview1_2.28.1-0ubuntu1.2_i386.deb
libexpat1_2.0.1-4ubuntu1.1_i386.deb
libfuse2_2.7.4-1.1ubuntu4.1_i386.deb
libgail18_2.18.3-1ubuntu2.1_i386.deb
libgail-common_2.18.3-1ubuntu2.1_i386.deb
libgcc1_1%3a4.4.1-4ubuntu9_i386.deb
libgd2-xpm_2.0.36~rc1~dfsg-3ubuntu1.9.10.1_i386.deb
libgimp2.0_2.6.7-1ubuntu1.1_i386.deb
libglib2.0-0_2.22.3-0ubuntu1_i386.deb
libglib2.0-data_2.22.3-0ubuntu1_all.deb
libgnome-desktop-2-11_1%3a2.28.1-0ubuntu3_i386.deb
libgomp1_4.4.1-4ubuntu9_i386.deb
libgssapi-krb5-2_1.7dfsg~beta3-1ubuntu0.3_i386.deb
libgstreamer-plugins-base0.10-0_0.10.25-2ubuntu1.2_i386.deb
libgtk2.0-0_2.18.3-1ubuntu2.1_i386.deb
libgtk2.0-bin_2.18.3-1ubuntu2.1_all.deb
libgtk2.0-common_2.18.3-1ubuntu2.1_all.deb
libgudev-1.0-0_1%3a147~-6.1_i386.deb
libhtml-parser-perl_3.61-1ubuntu0.1_i386.deb
libibus1_1.2.0.20090927-2ubuntu2_i386.deb
libindicate3_0.2.3-0ubuntu2_i386.deb
libindicate-gtk1_0.2.3-0ubuntu2_i386.deb
libisc50_1%3a9.6.1.dfsg.P1-3ubuntu0.3_i386.deb
libisccc50_1%3a9.6.1.dfsg.P1-3ubuntu0.3_i386.deb
libisccfg50_1%3a9.6.1.dfsg.P1-3ubuntu0.3_i386.deb
libk5crypto3_1.7dfsg~beta3-1ubuntu0.3_i386.deb
libkrb5-3_1.7dfsg~beta3-1ubuntu0.3_i386.deb
libkrb5support0_1.7dfsg~beta3-1ubuntu0.3_i386.deb
liblunar-1-0_2.0.1-2_i386.deb
liblwres50_1%3a9.6.1.dfsg.P1-3ubuntu0.3_i386.deb
libmd5-perl_2.03-1_all.deb
libnautilus-extension1_1%3a2.28.1-0ubuntu3_i386.deb
libobparser21_3.4.7.2-4_i386.deb
libobrender21_3.4.7.2-4_i386.deb
libpoppler5_0.12.0-0ubuntu2.1_i386.deb
libpoppler-glib4_0.12.0-0ubuntu2.1_i386.deb
libpq5_8.4.2-0ubuntu9.10_i386.deb
libpurple0_1%3a2.6.2-1ubuntu7.1_i386.deb
libpurple-bin_1%3a2.6.2-1ubuntu7.1_all.deb
libpython2.6_2.6.4-0ubuntu3_i386.deb
libreadline5_5.2-6_i386.deb
libsmbclient_2%3a3.4.0-3ubuntu5.3_i386.deb
libssl0.9.8_0.9.8g-16ubuntu3.1_i386.deb
libstdc++6_4.4.1-4ubuntu9_i386.deb
libthai0_0.1.12-1ubuntu0.2_i386.deb
libthai-data_0.1.12-1ubuntu0.2_all.deb
libudev0_147~-6.1_i386.deb
libupnp3_1%3a1.6.6-3_i386.deb
libvorbis0a_1.2.0.dfsg-6ubuntu0.1_i386.deb
libvorbisenc2_1.2.0.dfsg-6ubuntu0.1_i386.deb
libvorbisfile3_1.2.0.dfsg-6ubuntu0.1_i386.deb
libwbclient0_2%3a3.4.0-3ubuntu5.3_i386.deb
libwxbase2.6-0_2.6.3.2.2-3ubuntu5_i386.deb
libwxbase2.8-0_2.8.10.1-0ubuntu1_i386.deb
libwxgtk2.6-0_2.6.3.2.2-3ubuntu5_i386.deb
libwxgtk2.8-0_2.8.10.1-0ubuntu1_i386.deb
linux-firmware_1.25_all.deb
linux-generic_2.6.31.17.30_i386.deb
linux-headers-2.6.31-17_2.6.31-17.54_all.deb
linux-headers-2.6.31-17-generic_2.6.31-17.54_i386.deb
linux-headers-generic_2.6.31.17.30_i386.deb
linux-image-2.6.31-17-generic_2.6.31-17.54_i386.deb
linux-image-generic_2.6.31.17.30_i386.deb
linux-libc-dev_2.6.31-17.54_i386.deb
lock
lunar-applet_2.0-1.1_i386.deb
mailx_1%3a20081101-2ubuntu1_all.deb
nautilus_1%3a2.28.1-0ubuntu3_i386.deb
nautilus-data_1%3a2.28.1-0ubuntu3_all.deb
nautilus-gksu_2.0.2-2ubuntu1_i386.deb
network-manager-pptp_0.8~a~git.20091013t190309.0c39c37-0ubuntu1_i386.deb
network-manager-vpnc_0.8~a~git.20091008t124012.f5b95a2-0ubuntu1_i386.deb
ntpdate_1%3a4.2.4p6+dfsg-1ubuntu5.1_i386.deb
nvidia-common_0.2.15.1_i386.deb
obconf_2.0.3-3build1_i386.deb
openbox_3.4.7.2-4_i386.deb
openbox-themes_1.0.2_all.deb
openoffice.org-help-en-gb_1%3a3.1.1-4ubuntu1_all.deb
openoffice.org-help-zh-cn_1%3a3.1.1-4ubuntu1_all.deb
openoffice.org-l10n-common_1%3a3.1.1-4ubuntu1_all.deb
openoffice.org-l10n-en-gb_1%3a3.1.1-4ubuntu1_all.deb
openoffice.org-l10n-en-za_1%3a3.1.1-4ubuntu1_all.deb
openoffice.org-l10n-zh-cn_1%3a3.1.1-4ubuntu1_all.deb
openssl_0.9.8g-16ubuntu3.1_i386.deb
partial
poppler-utils_0.12.0-0ubuntu2.1_i386.deb
pptp-linux_1.7.2-3_i386.deb
python2.6_2.6.4-0ubuntu3_i386.deb
python_2.6.4-0ubuntu1_all.deb
python2.6-minimal_2.6.4-0ubuntu3_i386.deb
python-apport_1.9.3-0ubuntu4.2_all.deb
python-avahi_0.6.25-1ubuntu5.1_all.deb
python-compizconfig_0.8.2-0ubuntu1_i386.deb
python-ibus_1.2.0.20090927-2ubuntu2_all.deb
python-minimal_2.6.4-0ubuntu1_all.deb
python-problem-report_1.9.3-0ubuntu4.2_all.deb
python-pysqlite2_2.5.5-1ubuntu1_i386.deb
python-ubuntuone-client_1.0.2-0ubuntu2_all.deb
python-wxgtk2.6_2.6.3.2.2-3ubuntu5_i386.deb
python-wxversion_2.8.10.1-0ubuntu1_all.deb
resolvconf_1.44ubuntu1_all.deb
rhythmbox_0.12.5-0ubuntu5.1_i386.deb
rkhunter_1.3.4-5_all.deb
rsyslog_4.2.0-2ubuntu5.1_i386.deb
samba-common_2%3a3.4.0-3ubuntu5.3_all.deb
samba-common-bin_2%3a3.4.0-3ubuntu5.3_i386.deb
smbclient_2%3a3.4.0-3ubuntu5.3_i386.deb
sreadahead_1%3a0.90.3-2_i386.deb
system-tools-backends_2.8.2-1ubuntu1_i386.deb
sysvinit-utils_2.87dsf-4ubuntu12_i386.deb
sysv-rc_2.87dsf-4ubuntu12_all.deb
telepathy-gabble_0.8.7-1ubuntu1_i386.deb
totem_2.28.2-0ubuntu3_i386.deb
totem-common_2.28.2-0ubuntu3_all.deb
totem-mozilla_2.28.2-0ubuntu3_i386.deb
totem-plugins_2.28.2-0ubuntu3_i386.deb
transmission-common_1.75-0ubuntu2.2_all.deb
transmission-gtk_1.75-0ubuntu2.2_i386.deb
ttf-arphic-ukai_0.2.20080216.1-1_all.deb
ttf-arphic-uming_0.2.20080216.1-3ubuntu2_all.deb
tzdata_2009u-0ubuntu0.9.10_all.deb
ubuntuone-client_1.0.2-0ubuntu2_all.deb
ubuntuone-client-gnome_1.0.2-0ubuntu2_i386.deb
ubuntu-xsplash-artwork_0.8.5-0ubuntu1_i386.deb
udev_147~-6.1_i386.deb
unhide_20080519-4_i386.deb
update-manager_1%3a0.126.9_all.deb
update-manager-core_1%3a0.126.9_i386.deb
upstart_0.6.3-11_i386.deb
ureadahead_0.90.3-2_i386.deb
vpnc_0.5.3-1_i386.deb
x11-common_1%3a7.4+3ubuntu10_all.deb
xfonts-wqy_0.9.9-3.1_all.deb
xorg_1%3a7.4+3ubuntu10_i386.deb
xsane_0.996-2ubuntu1.1_i386.deb
xsane-common_0.996-2ubuntu1.1_all.deb
xserver-common_2%3a1.6.4-2ubuntu4.1_all.deb
xserver-xorg_1%3a7.4+3ubuntu10_i386.deb
xserver-xorg-core_2%3a1.6.4-2ubuntu4.1_i386.deb
xserver-xorg-input-all_1%3a7.4+3ubuntu10_i386.deb
xserver-xorg-video-all_1%3a7.4+3ubuntu10_i386.deb
xserver-xorg-video-intel_2%3a2.9.0-1ubuntu2.1_i386.deb
xsplash_0.8.5-0ubuntu1_i386.deb
xulrunner-1.9.1_1.9.1.7+nobinonly-0ubuntu0.9.10.1_i386.deb
xulrunner-1.9.1-gnome-support_1.9.1.7+nobinonly-0ubuntu0.9.10.1_i386.deb
yelp_2.28.0-0ubuntu2_i386.deb



不知道这些文件可以删除不？

[luojie-dune]

可以，apt-get autoremove

[jxhow]

sudo apt-get clean
sudo apt-get autoclean

[tenzu]

删掉的话，如果要再安装，就会重新下载
再说，这也叫优化？