How to add environment variables in Linux system

Editor to share with you how to add environmental variables to the Linux system. I hope you will get something after reading this article. Let's discuss it together.

1. View the current environment variable echo $PATH

two。 Adding a temporary environment variable export PATH=/usr/local/bin:$PATH / / PATH is the name of the variable. Here, it is added to the environment variable PATH and followed by the environment variable to be added /: $PATH refers to re-assigning the newly added environment variable and the original environment variable to the PATH variable. Here you can see that if there are multiple environment variables, you should use: to separate them. Such as / / export PATH=/usr/local/php/bin:/usr/local/mysql/bin:$PATH / / of course, it doesn't matter whether $PATH is placed at the beginning or at the end. The environment variable added by this method will take effect immediately, but it will expire after the window is closed.

3. Add the global environment variable vim / etc/profile / / if you only modify the current user's environment variables, add the following code to the last line of the file: export PATH=$PATH:/usr/local/php/bin / / rules and usage as described in the second article

4. After configuring the environment variables under / etc/profile here, you need to execute source / etc/profile again after closing the shell window to take effect. This problem needs to add source / etc/profile at the end of the ~ / .bashrc file, so the problem can be solved.

After reading this article, I believe you have a certain understanding of "how to add environmental variables to the Linux system". If you want to know more about it, welcome to follow the industry information channel. Thank you for reading!