Export Proxy Linux
How To Use Proxy Server To Access Internet at Shell Prompt …
I‘m behind a squid proxy server. How do I access internet via proxy server when I use wget, lynx and other utilities from a shell prompt on a Linux or Unix-like systems?
Linux and UNIX-like systems has environment variable called _proxy. It allows you to connect text based session and/or applications via the proxy server. All you need is proxy server IP address (URL) and port values. This variable is almost used by all utilities such as elinks, lynx, wget, curl and others commands.
Tutorial details
Difficulty level Easy Root privileges No Requirements Linux/Unix shell promot Est. reading time 2 mintues
Set _proxy shell variable on Linux/OS X/Unix bash shell
Type the following command to set proxy server:
$ export _proxy=server-ip:port/
$ export _proxy=$ export _proxy=If the proxy server requires a username and password then add these to the URL. For example, to include the username foo and the password bar:
$ export _proxy=foo:bar@server-ip:port/
$ export _proxy=foo:bar@127. 0. 1:3128/
$ export _proxy=
How do I setup proxy variable for all users?
To setup the proxy environment variable as a global variable, open /etc/profile file:
# vi /etc/profile
Add the following information:
export _proxy=OR
export _proxy=
Save and close the file.
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A note about enabling proxy access to a specific user
To enable proxy access for a specific user, add the lines user shell profile. For the default bash shell, the profile is the file. bash_profile. For example, enable proxy access for a specifc user called vivek, type:
$ vi $HOME/. bash_profile
OR
# vi /home/vivek/. bash_profile
Append the following line:
How do I use password protected proxy server using various command line options?
You can simply use wget command as follows:
$ wget –proxy-user=USERNAME –proxy-password=PASSWORD Lynx command has the following syntax:
$ lynx -pauth=USER:PASSWORD Curl command has following syntax:
$ curl –proxy-user user:password
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export http_proxy: where does the proxy setting get stored?
Today by mistake I had entered the following command in terminal with incorrect information
export _proxy=”usrname:passwrd@host:port”
and then my internet connection was having trouble.
In which file this export _proxy information got stored?
Thanks.
asked Apr 10 ’13 at 13:16
2
To my knowledge, the file:
/etc/environment
Is the correct place to specify system-wide environment variables that should be available to all processes. See for details. Note that this is not a script file but a configuration file.
Mark Kirby17. 1k18 gold badges73 silver badges106 bronze badges
answered Jan 24 ’15 at 13:51
You can reset the proxy back to its default (blank) by using the same command but not specifying any parameters as shown below:
export _proxy=””
answered Jul 18 ’16 at 19:25
waweruwaweru2311 gold badge4 silver badges7 bronze badges
You can use unset command to remove the environment variable.
unset _proxy
answered Oct 31 ’18 at 17:46
RohitRohit411 bronze badge
The only place manually running export foo=”something” in a terminal is stored, is in the environment for the shell running inside that terminal. It does not get propagated to the rest of the system, and only further commands run within that terminal will see that value.
You can use the same command with the correct values to set it in that terminal, or you can close that terminal, and set the proxy settings in the System Settings, then log out and back in, so that they are used by that majority of your applications.
answered Apr 10 ’13 at 14:10
dobeydobey38. 4k5 gold badges50 silver badges93 bronze badges
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How to set up proxy using http_proxy & https_proxy …
What is Proxy Server? Check current proxy configuration status (_proxy/_proxy)Set up proxy server using _proxy environment variableSet up proxy without username and passwordSet up proxy with username and passwordSet up proxy with domain, username and passwordSpecial character (@) handlingSet up proxy permanently using /etc/environmentSet up proxy permanently using /etc/profile. d
In this article I will share the steps to set up proxy server using _proxy and _proxy environment variable.
What is Proxy Server?
A proxy server is a dedicated computer or a software system running on a computer that acts as an intermediary between an endpoint device, such as a computer, and another server from which a user or client is requesting a service. The proxy server may exist in the same machine as a firewall server or it may be on a separate server, which forwards requests through the firewall.
Check current proxy configuration status (_proxy/_proxy)
This variable will show if there is a proxy server configured on the system:
# echo $_proxy
If these variables are empty it would mean that there are no proxy servers configured on the system level.
Set up proxy server using _proxy environment variable
The _proxy and _proxy environment variable is used to specify proxy settings to client programs such as curl and wget.
Set up proxy without username and password
Execute the below command with valid SERVER_IP and PORT on the terminal. This will enable proxy configuration for the current session but these values will not be persistent across reboot.
# export _proxy=SERVER:PORT/
Set up proxy with username and password
You can modify the earlier command to add the username and password value assuming a valid authentication is required to enable the proxy server configuration. But again this command will also enable proxy server for the current session only and will not be persistent across reboots.
# export _proxy=USERNAME:PASSWORD@SERVER:PORT/
Set up proxy with domain, username and password
Assuming you are also required to add domain detail while setting up proxy configuration on your system then use the below command
# export _proxy=DOMAIN\\USERNAME:PASSWORD@SERVER:PORT/
Special character (@) handling
With more complex and robust handling of special characters in username or password follow How to setup or proxy with special characters in username and password
When the username or password uses the @ symbol, add a backslash (\) before the @ – for example:
export _proxy=DOMAIN\\USERN\@ME:PASSWORD@SERVER:PORT
or
export _proxy=DOMAIN\\USERNAME:P\@SSWORD@SERVER:PORT
Set up proxy permanently using /etc/environment
Now as I have highlighted above the above commands will work only for the current active session but will not be available across reboots. So to make these changes persistent define the environment variables in /etc/environment file:
# echo “_proxy= >> /etc/environment
HINT:Here /etc/environment file is NOT a shell script and applies to all processes without shell.
Set up proxy permanently using /etc/profile. d
For bash and sh users, add the export line given above into a new file called /etc/profile. d/ file:
# echo “export _proxy= > /etc/profile. d/
For csh and tcsh users, use the following command to set the _proxy variable in a new file called /etc/profile. d/ file:
# echo “setenv _proxy > /etc/profile. d/
The extension of these files determines which shell will read them. The commands are not interchangeable.
HINT:Replace _proxy with _proxy in the export argument to enable proxy over SSL/TLS. This information will be provided by the Network Team who have provided the proxy server related details.
Lastly I hope the steps from the article to setup proxy using _proxy and _proxy environment variable in Linux was helpful. So, let me know your suggestions and feedback using the comment section.
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Frequently Asked Questions about export proxy linux
How do I permanently copy a proxy in Linux?
server:8081 for HTTPS.Open a Terminal window where you need proxy access.Set and export the HTTP_PROXY variable. export HTTP_PROXY=user:[email protected]:8080.Set and export the HTTPS_PROXY variable. … Set and export the NO_PROXY variable to prevent local traffic from being sent to the proxy.Apr 26, 2018
What is HTTP proxy Linux?
Linux and UNIX-like systems has environment variable called http_proxy. It allows you to connect text based session and/or applications via the proxy server. All you need is proxy server IP address (URL) and port values. This variable is almost used by all utilities such as elinks, lynx, wget, curl and others commands.Jul 13, 2021
Where is proxy file in Linux?
Proxy Authentication is stored in /etc/apt/apt. conf file. However you need root privileges to edit the file.Aug 4, 2012
