Bash

It is very common for developers to set Environment Variable while doing some development work or configuring the development environment. There are two kinds of Environment Variable: temporary and permanent. This post will show how to set both on macOS 1. Temporary environment variable We can simply execute the below command in the Terminal export [env_key]=[env_value] For example, to set DEBUG_MODE to true before running the development project. export DEBUG_MODE=true 2. Permanent environment variable Go to the user working directory to locate the file .bash_profile. Normally we can use vi ~/.bash_profile. Add the below command to the bottom of the file export [env_key]=[env_value] Save the changes with :wq in vim Refresh the cache of .bash_profile with source ~/.bash_profile After setting the environment variable, we can type echo ${env_key} to validate if it is successfully set. ...