[Linux] setting environment variables in Linux

Set environment variables in Ubuntu

There are three methods to set environment variables in Ubuntu: one for the current terminal, the other for the current user, and the other for all users.:

I. Used on the current terminal:

Enter: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:

VI ~ /. Bashrc

Join:

Export Path = <path you want to add>: $ path

If you want to add multiple paths, as long:

Export Path = <the path you want to add 1 >:< the path you want to add 2 >:......: $ path

Each path must be separated by a colon.

In this way, each login will take effect.

3. for all users:

Sudo VI/etc/profile

Join:
Export Path = <path you want to add>: $ path

You can.

Terminal input:Echo $ PATH allows you to view environment variables

Note: After the environment variable is modified, except for the first method, the second method takes effect immediately ~ /. Bashrc or log out and log on again!

Done!