Curl is a utility used for data transfer in command lines or scripts. In this tutorial, you will learn how to use the curl command to connect via a proxy server on the Linux system.
Using Environment Variable
In a very simple word, you can simply set the following environment variables on your system. The curl command will automatically use these variables as a proxy. You can export those variables in your shell, like:
Without Authentication export http_proxy="http://proxy.server:port" export https_proxy="https://proxy.server:port" With Authentication export http_proxy="http://username:[email protected]:port" export https_proxy="https://username:[email protected]:port"
After exporting the environment variables, the curl command will automatically use the above proxy during a remote connection.
curl http://example.com
Once your work is done, you can simply unset these environment variables like:
unset http_proxy unset https_proxy
Without Environment Variable
Instead of setting environment variables, you can simply pass the proxy details to curl command as a command-line parameter.
curl -x "http://username:[email protected]:port" http://example.com