export http_proxy: where does the proxy setting get stored?
Today by mistake I had entered the following command in terminal with incorrect information
and then my internet connection was having trouble.
In which file this export _proxy information got stored?
asked Apr 10 ’13 at 13:16
To my knowledge, the file:
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:
answered Jul 18 ’16 at 19:25
waweruwaweru2311 gold badge4 silver badges7 bronze badges
You can use unset command to remove the environment variable.
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 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.
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:
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
# 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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How to configure proxy settings on Ubuntu 18.04 – Serverlab
Proxies are commonly found on business networks, but they are increasingly becoming popular for personal use. The following tutorial will show you multiple ways of setting your proxy in Ubuntu 18. 04, allowing you to browse the Internet with additional privacy.
This tutorial will cover the following three areas. Use the one the fits your needs.
Desktop: learn how to set your proxy settings from within the desktop.
Terminal: set environment variables for your proxy server when using a terminal or console.
All users: setting the proxy settings for all users on the system.
Ubuntu Desktop Network Settings
Ubuntu 18. 04 Network Proxy Settings
To configure your proxy settings in Ubuntu Desktop you need to access Network Settings. Within there you can set a number of parameters, including proxy settings for HTTP traffic, HTTPS traffic, and FTP traffic.
Equally as important as setting your Internet proxy settings is setting Ignore Hosts, to prevent local traffic from going through your proxy server.
To set your proxy in Ubuntu Desktop, do the following:
Open the Application launcher by clicking the “Show Applications” icon, located at the bottom of the left-hand quick application access bar.
Type in ‘Settings’
Click the ‘Settings’ icon.
From the left-hand navigation, click the Network tab.
Network Settings Configuration Screen
Click the cog icon near the Network Proxy label.
Network settings proxy icon
A dialog box will appear where you can set your proxy settings.
In the appropriate text fields, enter your proxy server’s hostname or IP address. Ensure you change the port number to match your proxy server’s, too.
Ubuntu Proxy Settings Dialog Box
Close the dialog box. Your settings will be automatically saved.
Ubuntu Terminal Proxy Settings
Like every Linux distribution, proxy settings can be set using environment variables. There are a number of variables available to use, ranging from HTTP traffic to FTP traffic.
Proxy settings can be either persistent by setting them in your profile, or non-persistent by setting them from the shell session.
Proxy Environment Variables
Proxy server for HTTP Traffic.
Proxy server for HTTPS traffic
Proxy server for FTP traffic
Patterns for IP addresses or domain names that shouldn’t use the proxy
The value for every proxy setting, except for no_proxy, uses the same template. They all require a hostname, but you may optionally specify a proxy server port and your user credentials if required to do so. For example:
Single User Temporary Proxy Settings
You may not always want to force Internet traffic through a proxy. Sometimes you need to override existing settings, and you can do this safely by setting the proxy environment variables from the command line.
The following will set a proxy for HTTP and HTTPS, while preventing local traffic from going through the proxy. Our example proxy server endpoint is for HTTP traffic and 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.
export HTTPS_PROXY=user:[email protected]:8081
Set and export the NO_PROXY variable to prevent local traffic from being sent to the proxy.
export NO_PROXY=localhost, 127. 0. 1, *
Single User Persistent Proxy Settings
Open your bash profile file into a text editor.
vi ~/. bash_profile
Add the following lines, modifying them to match your environment.
export _proxy=username:[email protected]:8080
export _proxy=username:[email protected]:8081
exprot no_proxy=localhost, 127. 1, *
Save your settings.
The proxy settings will be applied the next time you start a session, by logging into the server or opening a new Terminal window from a Desktop.
To force apply your new proxy settings in the current Terminal session, execute the source command against your bash profile.
source ~/. bash_profile
You will need administrative rights to perform this task. All versions of Ubuntu and Debian have a file called /etc/environment. Within this file, we can set global variables and other such things.
Similar to how you set proxy settings for your own local proxy, we’ll be adding the environment variables to this file. The variables will be set when a new user session is created, which is to say when you log in next.
Using an administrator account, open /etc/environment into a text editor.
sudo vi /etc/environment
Add the following lines, modifying them to fit your environment. Username and password may be omitted, if not required.
For example, if you do not need to enter a username or password, and your proxy server is at port 8080, and you do not want local traffic going through the proxy, you would enter the following:
no_proxy=”localhost, 127. 1, ::1
Save your changes and exit the text editor.
Frequently Asked Questions about export http_proxy
What does export Http_proxy do?
Single User Temporary Proxy Settings The following will set a proxy for HTTP and HTTPS, while preventing local traffic from going through the proxy. … Set and export the HTTP_PROXY variable. export HTTP_PROXY=user:[email protected]:8080. Set and export the HTTPS_PROXY variable.Apr 26, 2018
What is Http_proxy and Https_proxy?
In short, both http_proxy and https_proxy support proxy for either HTTP or HTTPS requests. The difference is that http_proxy does not encrypt the data transmission between the client and proxies, while https_proxy does. So https_proxy proxies itself requires a TLS certificate.Feb 18, 2020
What is Http_proxy environment variable?
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