Add Environment Variables

An Environment variable is a dynamic-named value that can affect the way running processes will behave on a computer. They are part of the environment in which a process runs. Let's say now we need a JAVA_HOME variable.

On Mac OSX

1. Open .bash_profile or .zshrc by vi

vi ~/.zshrc
# or
vi ~/.bash_profile

2. Add JAVA_HOME variable like this

export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_281.jdk/Contents/Home

3. Run source command to done

source ~/.zshrc
# or
source ~/.bash_profile

On Windows 10

1. In Search, search for and then select: System (Control Panel) and we get

2. Click the Edit the system environment variables link and we get

3. Click to Environment Variables button and we get Environemment Variables popup

4. In System variables section, click to New... button and we have

5. Click OK button on New System Variable popup and remain popup and done