更新时的错误消息

Question

我使用Kubuntu 18.04.2，打开终端并输入以下命令进行更新：

sudo apt update

它产生了以下结果：

[sudo] password for aayush: 
Hit:1 http://packages.microsoft.com/repos/vscode stable InRelease                   
Hit:2 http://in.archive.ubuntu.com/ubuntu bionic InRelease               
Get:3 http://in.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Get:4 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]         
Get:5 http://security.ubuntu.com/ubuntu bionic-security/main amd64 DEP-11 Metadata [17.9 kB]
Get:6 http://in.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]      
Get:7 http://security.ubuntu.com/ubuntu bionic-security/main DEP-11 64x64 Icons [25.6 kB]
Get:8 http://in.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [658 kB]
Get:9 http://security.ubuntu.com/ubuntu bionic-security/main DEP-11 128x128 Icons [59.3 kB]
Get:10 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 DEP-11 Metadata [36.1 kB]
Get:11 http://security.ubuntu.com/ubuntu bionic-security/universe DEP-11 48x48 Icons [16.4 kB]
Get:12 http://security.ubuntu.com/ubuntu bionic-security/universe DEP-11 64x64 Icons [104 kB]
Get:13 http://security.ubuntu.com/ubuntu bionic-security/universe DEP-11 128x128 Icons [149 kB]
Get:14 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 DEP-11 Metadata [2,464 B]
Get:15 http://in.archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages [544 kB]
Ign:16 http://in.archive.ubuntu.com/ubuntu bionic-updates/main amd64 DEP-11 Metadata
Ign:17 http://in.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 48x48 Icons
42% [Connecting to in.archive.ubuntu.com (91.189.88.24)]                                        
42% [Connecting to in.archive.ubuntu.com (91.189.88.24)]                                        


Ign:18 http://in.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 64x64 Icons               
Ign:19 http://in.archive.ubuntu.com/ubuntu bionic-upd                                           ates/main DEP-11 128x128 Icons
Ign:20 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages
Ign:21 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe i386 Packages
Ign:22 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 DEP-11 Metadata
Ign:23 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 48x48 Icons
Ign:24 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 64x64 Icons
Ign:25 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 128x128 Icons
Ign:26 http://in.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 DEP-11 Metadata
Ign:27 http://in.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 DEP-11 Metadata
Ign:16 http://in.archive.ubuntu.com/ubuntu bionic-updates/main amd64 DEP-11 Metadata
Ign:17 http://in.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 48x48 Icons
Ign:18 http://in.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 64x64 Icons
Ign:19 http://in.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 128x128 Icons
Ign:20 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages
Ign:21 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe i386 Packages
Ign:22 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 DEP-11 Metadata
Ign:23 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 48x48 Icons
Ign:24 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 64x64 Icons
Ign:25 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 128x128 Icons
Ign:26 http://in.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 DEP-11 Metadata
Ign:27 http://in.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 DEP-11 Metadata
Ign:16 http://in.archive.ubuntu.com/ubuntu bionic-updates/main amd64 DEP-11 Metadata
Err:17 http://in.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 48x48 Icons
  Connection failed [IP: 2001:67c:1360:8001::21 80]
Err:18 http://in.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 64x64 Icons
  Connection failed [IP: 2001:67c:1360:8001::21 80]
Err:19 http://in.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 128x128 Icons
  Could not connect to in.archive.ubuntu.com:80 (2001:67c:1562::19), connection timed out Could not connect to in.archive.ubuntu.com:80 (91.189.88.31), connection timed out Could not connect to in.archive.ubuntu.com:80 (2001:67c:1560:8001::14), connection timed out Could not connect to in.archive.ubuntu.com:80 (91.189.88.149), connection timed out Could not connect to in.archive.ubuntu.com:80 (2001:67c:1360:8001::17), connection timed out Could not connect to in.archive.ubuntu.com:80 (91.189.91.26), connection timed out Could not connect to in.archive.ubuntu.com:80 (2001:67c:1360:8001::21), connection timed out Could not connect to in.archive.ubuntu.com:80 (91.189.88.162), connection timed out Could not connect to in.archive.ubuntu.com:80 (2001:67c:1560:8001::11), connection timed out Could not connect to in.archive.ubuntu.com:80 (91.189.91.23), connection timed out Could not connect to in.archive.ubuntu.com:80 (91.189.88.24), connection timed out [IP: 2001:67c:1560:8001::11 80]
Err:20 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages
  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
Err:21 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe i386 Packages
  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
Err:22 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 DEP-11 Metadata
  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
Err:23 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 48x48 Icons
  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
Err:24 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 64x64 Icons
  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
Err:25 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 128x128 Icons
  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
Err:26 http://in.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 DEP-11 Metadata
  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
Ign:27 http://in.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 DEP-11 Metadata
Err:27 http://in.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 DEP-11 Metadata
  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
Fetched 1,866 kB in 6min 30s (4,784 B/s)
Reading package lists... Done
Building dependency tree       
Reading state information... Done
All packages are up to date.
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/main/dep11/icons-48x48.tar  Connection failed [IP: 2001:67c:1360:8001::21 80]
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/main/dep11/icons-64x64.tar  Connection failed [IP: 2001:67c:1360:8001::21 80]
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/main/dep11/icons-128x128.tar  Could not connect to in.archive.ubuntu.com:80 (2001:67c:1562::19), connection timed out Could not connect to in.archive.ubuntu.com:80 (91.189.88.31), connection timed out Could not connect to in.archive.ubuntu.com:80 (2001:67c:1560:8001::14), connection timed out Could not connect to in.archive.ubuntu.com:80 (91.189.88.149), connection timed out Could not connect to in.archive.ubuntu.com:80 (2001:67c:1360:8001::17), connection timed out Could not connect to in.archive.ubuntu.com:80 (91.189.91.26), connection timed out Could not connect to in.archive.ubuntu.com:80 (2001:67c:1360:8001::21), connection timed out Could not connect to in.archive.ubuntu.com:80 (91.189.88.162), connection timed out Could not connect to in.archive.ubuntu.com:80 (2001:67c:1560:8001::11), connection timed out Could not connect to in.archive.ubuntu.com:80 (91.189.91.23), connection timed out Could not connect to in.archive.ubuntu.com:80 (91.189.88.24), connection timed out [IP: 2001:67c:1560:8001::11 80]
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/universe/binary-amd64/Packages.gz  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/universe/binary-i386/Packages.gz  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/universe/dep11/Components-amd64.yml.gz  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/universe/dep11/icons-48x48.tar  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/universe/dep11/icons-64x64.tar  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/universe/dep11/icons-128x128.tar  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/multiverse/dep11/Components-amd64.yml.gz  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-backports/universe/dep11/Components-amd64.yml  Unable to connect to in.archive.ubuntu.com:http: [IP: 2001:67c:1560:8001::11 80]
W: Some index files failed to download. They have been ignored, or old ones used instead.
aayush@aayush-desktop-edu:~$ 
::1                 ip6-allrouters
aayush-desktop-edu  ip6-localhost
fe00::0             ip6-localnet
ff00::0             ip6-loopback
ff02::1             ip6-mcastprefix
ff02::2             localhost
ip6-allnodes        
aayush@aayush-desktop-edu:~$ sd
sd: command not found

我知道我的互联网连接很弱，因为命令未能更新软件列表，但是这条消息的最后几行包含了主机文件中可用的信息。我的系统里有恶意软件吗？为何会产生这样的信息呢？

Answer 1

看上去不像。但是，允许您检查的一件事是运行top命令，查看是否有任何不寻常的进程正在运行。

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