direnv
Direnv is an environment management tool that automatically loads and unloads environment variables based on the current working directory. It works by pairing a shell extension with per-directory configuration files named .envrc, allowing projects to specify their runtime environment independent of the global shell state.
Operation and workflow: Direnv installs a shell hook that runs whenever you change directories. If the target
Usage and examples: In a project root, you can create an .envrc that exports variables or adjusts
Security and considerations: A key security aspect is that .envrc files can run arbitrary shell commands. Therefore,
Availability and compatibility: Direnv provides shell integrations for Bash, Zsh, Fish, Tcsh, and other POSIX-compatible shells.