A tool that identifies installed homebrew formulae, when they were last accessed, and removes them based off set date of expiry.

Tap the formulae. brew tap nicknacnic/prune

Install the formulae. brew install prune

Run the formulae. prune -h

This script is designed to help clean up your macOS system by uninstalling Homebrew packages and casks that haven't been used for a significant amount of time.

The script operates in several steps:

1. Date Comparison Setup: It sets up a comparison date against which the last access dates of the packages will be compared. Default is two years prior to when prune is run.

2. Iterating Over Homebrew Packages: The script lists all packages installed via Homebrew and processes each one individually.

3. Determining File Paths: For each package, the script checks for the presence of its main executable or library file in standard Homebrew installation paths (/usr/local/bin for executables and /usr/local/lib for libraries).

4. Last Access Time Retrieval: If the file is found, the script retrieves its last access time using the ls -lu command.

5. Date Parsing and Comparison: The script then parses this last access date. It handles different date formats depending on whether the date is from the current year or a previous year. The parsed date is compared against the set comparison date.

6. Conditional Uninstallation: If a package's last access date is before the comparison date, the script uninstalls the package using brew uninstall.

7. Logging: All actions, including checks, uninstallations, and any errors (like missing files), are logged to an output file (brew_package_usage.txt) for review.

• Refactor
• Add backup function
• Add casks to logic
• Use built-in brew commands to locate non-default-location packages
• brew pin catch