Configuring a Network Proxy

If you cannot directly access the Internet, configure a network proxy temporarily or permanently. A permanent network proxy may cause password leakage because all users in the environment can obtain the password. Therefore, you are advised to configure a temporary network proxy. You can also select the proxy mode that better suits your requirements.

Method 1: Configuring a Temporary Network Proxy

Configure environment variables (replace the variables with the actual ones).

export http_proxy="http://Username:Password@Proxy_IP_address:Proxy_port" 
export https_proxy=$http_proxy

Check that the Internet connection is normal.
```
curl www.baidu.com
```

Method 2: Configuring a Permanent Network Proxy

Modify the profile file.
1. Open the /etc/profile file.
  vi /etc/profile
2. Press i to enter the insert mode. Add the following content to the /etc/profile file (replace the variables with the actual ones):
  export http_proxy="http://Username:Password@Proxy_IP_address:Proxy_port"
```
export https_proxy=$http_proxy 
```
```
export no_proxy=127.0.0.1,localhost,local,.local
```
3. Press Esc, type :wq!, and press Enter to save the settings and exit.
4. Make the proxy take effect.
  source /etc/profile
Check that the Internet connection is normal.
```
curl www.baidu.com
```

Parent topic: Configuring the Compilation Environment