Linux_Best Practice_01_Ubuntu_set prox_set Repositories

Setting proxy from terminal

1. For gtk3 programs such as rhythmbox and online accounts:

First you need to enter proxy settings in network settings (along with authentication):

Then apply system wide.

2. For apt,software center etc

edit the file /etc/apt/apt.conf

And then replace all the existing text by the following lines

  1. Acquire::http::proxy "http://username:password@host:port/";
  2. Acquire::ftp::proxy "ftp://username:password@host:port/";
  3. Acquire::https::proxy "https://username:password@host:port/";

configure proxy for apt in ubuntu 18.04

Creating  an Apt Proxy Conf File

Apt loads all configuration files under /etc/apt/apt.conf.d. We can create a configuration specifically for our proxy there, keeping it separate from all other configurations.

  1. Create a new configuration file named proxy.conf. 
    sudo touch /etc/apt/apt.conf.d/proxy.conf
  2. Open the proxy.conf file in a text editor. 
    sudo vi /etc/apt/apt.conf.d/proxy.conf
  3. Add the following line to set your HTTP proxy. 
    Acquire::http::Proxy "http://user:password@proxy.server:port/";
  4. Add the following line to set your HTTPS proxy. 
    Acquire::https::Proxy "http://user:password@proxy.server:port/";
  5. Save your changes and exit the text editor.

Your proxy settings will be applied the next time your run Apt.

3. Environment variables

edit the file /etc/environment

And then add the following lines after PATH="something here"

  1. http_proxy=http://username:password@host:port/
  2. ftp_proxy=ftp://username:password@host:port/
  3. https_proxy=https://username:password@host:port/

set Repositories.

https://help.ubuntu.com/community/Repositories/CommandLine

Ubuntu uses apt for package management. Apt stores a list of repositories or software channels in the file

/etc/apt/sources.list

and in any file with the suffix .list under the directory

/etc/apt/sources.list.d/

CN Repository

 1 tlfox@tlfox-virtual-machine:/etc/apt$ more sources.list.save 
 2 # deb cdrom:[Ubuntu 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160719)]/ xenial main restricted
 3 
 4 # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
 5 # newer versions of the distribution.
 6 deb http://cn.archive.ubuntu.com/ubuntu/ xenial main restricted
 7 # deb-src http://cn.archive.ubuntu.com/ubuntu/ xenial main restricted
 8 
 9 ## Major bug fix updates produced after the final release of the
10 ## distribution.
11 deb http://cn.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
12 # deb-src http://cn.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
13 
14 ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
15 ## team, and may not be under a free licence. Please satisfy yourself as to
16 ## your rights to use the software. Also, please note that software in
17 ## universe WILL NOT receive any review or updates from the Ubuntu security
18 ## team.
19 deb http://cn.archive.ubuntu.com/ubuntu/ xenial universe
20 # deb-src http://cn.archive.ubuntu.com/ubuntu/ xenial universe
21 deb http://cn.archive.ubuntu.com/ubuntu/ xenial-updates universe
22 # deb-src http://cn.archive.ubuntu.com/ubuntu/ xenial-updates universe
23 
24 ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
25 ## team, and may not be under a free licence. Please satisfy yourself as to 
26 ## your rights to use the software. Also, please note that software in 
27 ## multiverse WILL NOT receive any review or updates from the Ubuntu
28 ## security team.
29 deb http://cn.archive.ubuntu.com/ubuntu/ xenial multiverse
30 # deb-src http://cn.archive.ubuntu.com/ubuntu/ xenial multiverse
31 deb http://cn.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
32 # deb-src http://cn.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
33 
34 ## N.B. software from this repository may not have been tested as
35 ## extensively as that contained in the main release, although it includes
36 ## newer versions of some applications which may provide useful features.
37 ## Also, please note that software in backports WILL NOT receive any review
38 ## or updates from the Ubuntu security team.
39 deb http://cn.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
40 # deb-src http://cn.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
41 
42 ## Uncomment the following two lines to add software from Canonical's
43 ## 'partner' repository.
44 ## This software is not part of Ubuntu, but is offered by Canonical and the
45 ## respective vendors as a service to Ubuntu users.
46 # deb http://archive.canonical.com/ubuntu xenial partner
47 # deb-src http://archive.canonical.com/ubuntu xenial partner
48 
49 deb http://security.ubuntu.com/ubuntu xenial-security main restricted
50 # deb-src http://security.ubuntu.com/ubuntu xenial-security main restricted
51 deb http://security.ubuntu.com/ubuntu xenial-security universe
52 # deb-src http://security.ubuntu.com/ubuntu xenial-security universe
53 deb http://security.ubuntu.com/ubuntu xenial-security multiverse
54 # deb-src http://security.ubuntu.com/ubuntu xenial-security
CN Repository

US Repository

 1 tlfox@tlfox-virtual-machine:/etc/apt$ more sources.list
 2 
 3 # 
 4 
 5 # deb cdrom:[Ubuntu-Server 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160719)]/ xenial main restricted
 6 
 7 #deb cdrom:[Ubuntu-Server 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160719)]/ xenial main restricted
 8 
 9 # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
10 # newer versions of the distribution.
11 deb http://us.archive.ubuntu.com/ubuntu/ xenial main restricted
12 # deb-src http://us.archive.ubuntu.com/ubuntu/ xenial main restricted
13 
14 ## Major bug fix updates produced after the final release of the
15 ## distribution.
16 deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
17 # deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
18 
19 ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
20 ## team. Also, please note that software in universe WILL NOT receive any
21 ## review or updates from the Ubuntu security team.
22 deb http://us.archive.ubuntu.com/ubuntu/ xenial universe
23 # deb-src http://us.archive.ubuntu.com/ubuntu/ xenial universe
24 deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates universe
25 # deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-updates universe
26 
27 ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
28 ## team, and may not be under a free licence. Please satisfy yourself as to 
29 ## your rights to use the software. Also, please note that software in 
30 ## multiverse WILL NOT receive any review or updates from the Ubuntu
31 ## security team.
32 deb http://us.archive.ubuntu.com/ubuntu/ xenial multiverse
33 # deb-src http://us.archive.ubuntu.com/ubuntu/ xenial multiverse
34 deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
35 # deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
36 
37 ## N.B. software from this repository may not have been tested as
38 ## extensively as that contained in the main release, although it includes
39 ## newer versions of some applications which may provide useful features.
40 ## Also, please note that software in backports WILL NOT receive any review
41 ## or updates from the Ubuntu security team.
42 deb http://us.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
43 # deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
44 
45 ## Uncomment the following two lines to add software from Canonical's
46 ## 'partner' repository.
47 ## This software is not part of Ubuntu, but is offered by Canonical and the
48 ## respective vendors as a service to Ubuntu users.
49 # deb http://archive.canonical.com/ubuntu xenial partner
50 # deb-src http://archive.canonical.com/ubuntu xenial partner
51 
52 deb http://security.ubuntu.com/ubuntu xenial-security main restricted
53 # deb-src http://security.ubuntu.com/ubuntu xenial-security main restricted
54 deb http://security.ubuntu.com/ubuntu xenial-security universe
55 # deb-src http://security.ubuntu.com/ubuntu xenial-security universe
56 deb http://security.ubuntu.com/ubuntu xenial-security multiverse
57 # deb-src http://security.ubuntu.com/ubuntu xenial-security multiverse
US Repository
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原文地址：https://www.cnblogs.com/tlfox2006/p/8013224.html