How to set ubuntu environment variables

There are three ways to set environment variables in Ubuntu: one for the current terminal, the other for the current user, and the other for all users. Next let's take a look at the specific settings. Ubuntu

I. used on the current terminal:

Enter:

Copy codeThe code is as follows:
Export PATH = $ PATH: <Path you want to add>

However, the above method only applies to the current terminal. once the current terminal is closed or in another terminal, it is invalid.

II. used for the current user:

There is a. bashrc hidden file in the user's main directory. you can add the PATH settings in this file as follows:

Copy codeThe code is as follows:
Vi ~ /. Bashrc

Join:

Copy codeThe code is as follows:
Export PATH = <Path you want to add> : $ PATH

If you want to add multiple paths, as long:

Copy codeThe code is as follows:
Export PATH = <Path 1 you want to add> : <Path 2 you want to add> : ......: $ PATH

Each path must be separated by a colon.

In this way, each login will take effect.

3. for all users:

Copy codeThe code is as follows:
Sudo vi/etc/profile

Join:

Copy codeThe code is as follows:
Export PATH = <Path you want to add> : $ PATH

You can.