shell-direnv

name	shell-direnv
description	Configure environment per directory. TIL note about shell. Use when working with shell and the user mentions direnv or related topics.

Configure environment per directory

direnv is a self-contained binary tool, which allows setting-up shell environemnt per directory. It hooks into the shell prompt evaluation.

When you enter a directory it loads an .env or .envrc file, if present, and unloads it as you exit the directory. Supports also plugins for other actions per-directory, like activate/deactivate a Python pyenv.

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Here's how to use direnv:

1. Install direnv
2. Hook direnv into your shell

Add environment to .env or .envrc in a directory

echo "export TEST=foo" > .envrc

Allow direnv to use it

direnv allow

Try it out

cd ..
echo $TEST
cd -
echo $TEST