Best answer: How do I permanently set an environment variable in UNIX?

How do I permanently set an environment variable in Linux?

To make an environment persistent for a user’s environment, we export the variable from the user’s profile script.

  1. Open the current user’s profile into a text editor. vi ~/.bash_profile.
  2. Add the export command for every environment variable you want to persist. export JAVA_HOME=/opt/openjdk11.
  3. Save your changes.

How do I permanently add a path in Linux?

Permanently add a directory to $PATH

bashrc file of the user you want to change. Use nano or your favorite text editor to open the file, stored in the home directory. At the end of this file, put your new directory that you wish to permanently add to $PATH. Save your changes and exit the file.

How do I set environment variables permanently?

To make permanent changes to the environment variables for all new accounts, go to your /etc/skel files, such as . bashrc , and change the ones that are already there or enter the new ones. When you create new users, these /etc/skel files will be copied to the new user’s home directory.

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How do I permanently set environment variables in Ubuntu?

“ubuntu set environment variable permanently” Code Answer’s

  1. #open terminal and type:
  2. $ nano . bashrc.
  3. #scroll to the bottom of the script and type:
  4. export <place variable name in here> = ‘<place variable value here>’
  5. #e.g.
  6. export ANDROID_SDK_ROOT=’/home/<$USER>/Android/Sdk’

How do I set environment variables in bash?

The easiest way to set environment variables in Bash is to use the “export” keyword followed by the variable name, an equal sign and the value to be assigned to the environment variable.

How do you set a PATH variable?


  1. In Search, search for and then select: System (Control Panel)
  2. Click the Advanced system settings link.
  3. Click Environment Variables. …
  4. In the Edit System Variable (or New System Variable) window, specify the value of the PATH environment variable. …
  5. Reopen Command prompt window, and run your java code.

How do I get a list of environment variables in Linux?

Linux List All Environment Variables Command

  1. printenv command – Print all or part of environment.
  2. env command – Display all exported environment or run a program in a modified environment.
  3. set command – List the name and value of each shell variable.

What is the difference between set and Setx?

SETX is used for the same purpose as SET is used. Like for creating new environment variable or updating the value of existing one. But, SETX updates the value permanently & Its scope doesn’t remain limited to the current shell.

What is Setx command?

Creates or modifies environment variables in the user or system environment, without requiring programming or scripting. The Setx command also retrieves the values of registry keys and writes them to text files.

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IS SET command permanent?

Permanently set environment variable

To permanently set an environment variable that will persist across command prompts and through restart, use setx .

Do environment variables persist?

What Are Environment Variables: A Definition. Environment variables are variables that contain values necessary to set up a shell environment. Contrary to shell variables, environment variables persist in the shell’s child processes.

How do I permanently set classpath in Ubuntu?

if you want to set classpath permanently then 1) find out where java is installed.. you may use “whereis java” openjdk-7/6 is in /usr/lib/jvm/…..

3 Answers

  1. /dir1/foo. …
  2. /dir2/dir3 – all un-jar’d classes in this directory will be added to the classpath (must be in proper package structure; e.g, com.