How to set up proxy using CentOS command line

Set the global proxy as follows:

1. Set relevant environment variables in the profile file

# vi /etc/profile

http_proxy=http://192.168.20.20:3128 #Specify the proxy server addresses used by http, https and ftp protocols respectively

export http_proxy

2. Source /etc/profile takes effect.

After the modification is completed, log out and log in again.

For the yum proxy, you must also set up the /etc/yum.conf file and add the following code:

proxy=http://username:password@yourproxy:8080/

#If there is no password restriction, the following method is used

#proxy=http://yourproxy:8080/

In this way, yum operations go through the proxy

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