在此向这个精彩的论坛发布我的第一个问题！
我有一个旧的 chrome 安装，由于 32 位 xubuntu 系统，不再受支持。根据更新的输出（见下文），删除命令没有删除所有内容，所以我尝试了清除，但这并没有改变结果。
我该怎么办？
垃圾邮件限制使我无法提供完整的文档，因此我希望获得逐步的帮助[经过一些编辑后，现在有了预期的文档]。
peter@peter-HP-Compaq-2510p:~$ sudo apt-get update
Ign:1 http ://dl.google.com/linux/chrome/deb stable InRelease
Hit:2 http ://se.archive.ubuntu.com/ubuntu bionic InRelease
Hit:3 http ://se.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:4 http ://se.archive.ubuntu.com/ubuntu bionic-backports InRelease
Get:5 http ://dl.google.com/linux/chrome/deb stable Release [943 B]
Get:6 http ://dl.google.com/linux/chrome/deb stable Release.gpg [819 B]
Get:7 http ://security.ubuntu.com/ubuntu bionic-security InRelease [88,7 kB]
Ign:8 http ://archive.canonical.com/ubuntu saucy InRelease
Err:9 http ://archive.canonical.com/ubuntu saucy Release
404 Not Found [IP: 91.189.91.15 80]
Ign:6 http ://dl.google.com/linux/chrome/deb stable Release.gpg
Reading package lists... Done
E: The repository 'http ://archive.canonical.com/ubuntu saucy Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http ://dl.google.com/linux/chrome/deb stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E
E: The repository 'http ://dl.google.com/linux/chrome/deb stable Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
peter@peter-HP-Compaq-2510p:~$ sudo apt-get remove google-chrome-stable
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'google-chrome-stable' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
peter@peter-HP-Compaq-2510p:~$ sudo apt-get purge google-chrome-stable
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
google-chrome-stable*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
(Reading database ... 238783 files and directories currently installed.)
Purging configuration files for google-chrome-stable (48.0.2564.116-1) ...
peter@peter-HP-Compaq-2510p:~$ sudo apt-get update
Hit:1 http ://se.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http ://se.archive.ubuntu.com/ubuntu bionic-updates InRelease
Ign:3 http ://dl.google.com/linux/chrome/deb stable InRelease
Hit:4 http ://archive.canonical.com/ubuntu saucy InRelease
Get:5 http ://security.ubuntu.com/ubuntu bionic-security InRelease [88,7 kB]
Hit:6 http ://se.archive.ubuntu.com/ubuntu bionic-backports InRelease
Get:7 http ://dl.google.com/linux/chrome/deb stable Release [943 B]
Get:8 http ://dl.google.com/linux/chrome/deb stable Release.gpg [819 B]
Ign:8 http://dl.google.com/linux/chrome/deb stable Release.gpg
Reading package lists... Done
W: GPG error: http ://dl.google.com/linux/chrome/deb stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E
E: The repository 'http ://dl.google.com/linux/chrome/deb stable Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
peter@peter-HP-Compaq-2510p:~$ sudo apt-get autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
peter@peter-HP-Compaq-2510p:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.2 LTS"
谢谢你！
编辑：
尝试了答案中提到的命令。请注意，由于某种原因，按顺序进行的两次更新给出了略有不同的输出。
peter@peter-HP-Compaq-2510p:~$ sudo apt-get autoclean
[sudo] password for peter:
Reading package lists... Done
Building dependency tree
Reading state information... Done
peter@peter-HP-Compaq-2510p:~$ sudo apt-get autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
peter@peter-HP-Compaq-2510p:~$ sudo apt-get update
Hit:1 http ://se.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http ://se.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:3 http ://se.archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit:4 http ://archive.canonical.com/ubuntu saucy InRelease
Ign:5 http ://dl.google.com/linux/chrome/deb stable InRelease
Get:6 http ://dl.google.com/linux/chrome/deb stable Release [943 B]
Get:7 http ://dl.google.com/linux/chrome/deb stable Release.gpg [819 B]
Get:8 http ://security.ubuntu.com/ubuntu bionic-security InRelease [88,7 kB]
Ign:7 http ://dl.google.com/linux/chrome/deb stable Release.gpg
Reading package lists... Done
W: GPG error: http ://dl.google.com/linux/chrome/deb stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E
E: The repository 'http ://dl.google.com/linux/chrome/deb stable Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
peter@peter-HP-Compaq-2510p:~$ sudo apt-get update
Hit:1 http ://se.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http ://se.archive.ubuntu.com/ubuntu bionic-updates InRelease
Ign:3 http ://dl.google.com/linux/chrome/deb stable InRelease
Hit:4 http ://se.archive.ubuntu.com/ubuntu bionic-backports InRelease
Get:5 http ://dl.google.com/linux/chrome/deb stable Release [943 B]
Get:6 http ://dl.google.com/linux/chrome/deb stable Release.gpg [819 B]
Get:7 http ://security.ubuntu.com/ubuntu bionic-security InRelease [88,7 kB]
Ign:8 http ://archive.canonical.com/ubuntu saucy InRelease
Err:9 http ://archive.canonical.com/ubuntu saucy Release
404 Not Found [IP: 91.189.91.15 80]
Ign :6 http ://dl.google.com/linux/chrome/deb stable Release.gpg
Reading package lists... Done
E: The repository 'http ://archive.canonical.com/ubuntu saucy Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http ://dl.google.com/linux/chrome/deb stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E
E: The repository 'http ://dl.google.com/linux/chrome/deb stable Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
编辑：
使用结果sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <PUBKEY>
peter@peter-HP-Compaq-2510p:~$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 6494C6D6997C215E
Executing: /tmp/apt-key-gpghome.peImdN0Ry6/gpg.1.sh --keyserver keyserver.ubuntu.com --recv-keys 6494C6D6997C215E
gpg: key 7721F63BD38B4796: 17 signatures not checked due to missing keys
gpg: key 7721F63BD38B4796: public key "Google Inc. (Linux Packages Signing Authority) <[email protected]>" imported
gpg: Total number processed: 1
gpg: imported: 1
peter@peter-HP-Compaq-2510p:~$ sudo apt-get update
Hit:1 http ://se.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http ://se.archive.ubuntu.com/ubuntu bionic-updates InRelease
Get:3 http ://se.archive.ubuntu.com/ubuntu bionic-backports InRelease [74,6 kB]
Ign:4 http ://dl.google.com/linux/chrome/deb stable InRelease
Get:5 http ://dl.google.com/linux/chrome/deb stable Release [943 B]
Get:6 http ://dl.google.com/linux/chrome/deb stable Release.gpg [819 B]
Hit:7 http ://security.ubuntu.com/ubuntu bionic-security InRelease
Ign:8 http ://archive.canonical.com/ubuntu saucy InRelease
Err:9 http ://archive.canonical.com/ubuntu saucy Release
404 Not Found [IP: 91.189.91.15 80]
Reading package lists... Done
E: The repository 'http ://archive.canonical.com/ubuntu saucy Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'http ://dl.google.com/linux/chrome/deb stable InRelease' doesn't support architecture 'i386'
peter@peter-HP-Compaq-2510p:~$ sudo apt-get purge google-chrome-stable:i386
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'google-chrome-stable' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
peter@peter-HP-Compaq-2510p:~$ sudo apt-get autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
peter@peter-HP-Compaq-2510p:~$
编辑：
结果是，通过使用 GUI“软件和更新”，删除了一个带有 crome 的软件和一个带有 saucy 的软件。
peter@peter-HP-Compaq-2510p:~$ sudo apt-get update
Hit:1 http ://se.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http ://se.archive.ubuntu.com/ubuntu bionic-updates InRelease
Get:3 http ://se.archive.ubuntu.com/ubuntu bionic-backports InRelease [74,6 kB]
Get:4 http ://security.ubuntu.com/ubuntu bionic-security InRelease [88,7 kB]
Hit:5 http ://archive.canonical.com/ubuntu saucy InRelease
Fetched 163 kB in 2s (71,9 kB/s)
Reading package lists... Done
peter@peter-HP-Compaq-2510p:~$
编辑：根据 karel 的建议，我在 source.list 中注释掉了以下行：#deb-src http://archive.canonical.com/ubuntu saucy partner。现在只剩下四个项目需要解决。
peter@peter-HP-Compaq-2510p:~$ sudo nano /etc/apt/sources.list
peter@peter-HP-Compaq-2510p:~$ sudo apt-get update
Hit:1 http ://se.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http ://se.archive.ubuntu.com/ubuntu bionic-updates InRelease
Get:3 http ://se.archive.ubuntu.com/ubuntu bionic-backports InRelease [74,6 kB]
Get:4 http ://security.ubuntu.com/ubuntu bionic-security InRelease [88,7 kB]
Fetched 163 kB in 4s (43,1 kB/s)
Reading package lists... Done
peter@peter-HP-Compaq-2510p:~$
编辑：尝试根据 karel 的建议，通过改变 sources.list 来解决问题。
peter@peter-HP-Compaq-2510p:~$ cat /etc/apt/sources.list
#Five lines inserted 04/25/2019 #P = commented out same day
deb http://archive.ubuntu.com/ubuntu/ bionic main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu bionic-security main restricted universe multiverse
deb http://archive.canonical.com/ubuntu bionic partner
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
#P deb http://se.archive.ubuntu.com/ubuntu/ bionic main restricted
#P deb-src http://se.archive.ubuntu.com/ubuntu/ bionic main restricted
## Major bug fix updates produced after the final release of the
## distribution.
#P deb http://se.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
#P deb-src http://se.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
#P deb http://se.archive.ubuntu.com/ubuntu/ bionic universe
#P deb-src http://se.archive.ubuntu.com/ubuntu/ bionic universe
#P deb http://se.archive.ubuntu.com/ubuntu/ bionic-updates universe
#P deb-src http://se.archive.ubuntu.com/ubuntu/ bionic-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
#P deb http://se.archive.ubuntu.com/ubuntu/ bionic multiverse
#P deb-src http://se.archive.ubuntu.com/ubuntu/ bionic multiverse
#P deb http://se.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
#P deb-src http://se.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
#P deb http://se.archive.ubuntu.com/ubuntu/ bionic-backports main universe multiverse restricted
#P deb-src http://se.archive.ubuntu.com/ubuntu/ bionic-backports main universe multiverse restricted
#P deb http://security.ubuntu.com/ubuntu bionic-security main restricted
#P deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted
#P deb http://security.ubuntu.com/ubuntu bionic-security universe
#P deb-src http://security.ubuntu.com/ubuntu bionic-security universe
#P deb http://security.ubuntu.com/ubuntu bionic-security multiverse
#P deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu saucy partner
#deb-src http://archive.canonical.com/ubuntu saucy partner
# deb https://dl.winehq.org/wine-builds/ubuntu/ bionic main # disabled on upgrade to bionic
# deb-src https://dl.winehq.org/wine-builds/ubuntu/ xenial mainGXGXG
peter@peter-HP-Compaq-2510p:~$ sudo apt-get update
Hit:1 http://archive.canonical.com/ubuntu bionic InRelease
Get:2 http://security.ubuntu.com/ubuntu bionic-security InRelease [88,7 kB]
Hit:3 http://archive.ubuntu.com/ubuntu bionic InRelease
Hit:4 http://archive.ubuntu.com/ubuntu bionic-updates InRelease
Get:5 http://archive.ubuntu.com/ubuntu bionic-backports InRelease [74,6 kB]
Fetched 163 kB in 2s (84,5 kB/s)
Reading package lists... Done
peter@peter-HP-Compaq-2510p:~$
答案1
sudo apt-get autoclean
sudo apt-get autoremove
这两个命令会清理旧的和未使用的包