Recovering a deleted /usr/local/share directory on an Apple M1 Mac is straightforward because the folder is typically empty or contains only user-installed package data, not core system files. The most reliable solution is to reinstall Homebrew, which automatically recreates the necessary directory structure and restores permissions for command-line tools.
Understanding the Role of /usr/local/share
On macOS systems with Apple Silicon (M1, M2, etc.), the/usr/local path has traditionally been used by Homebrew to store software that is not part of the operating system. While Intel-based Macs often use this path for all Homebrew installations, Apple Silicon Macs primarily use /opt/homebrew. However, if you have explicitly installed Homebrew to /usr/local or are using a compatibility layer, the /usr/local/share directory becomes critical.
This specific subdirectory usually holds architecture-independent data such as man pages, documentation, icons, and locale files for installed packages. It does not contain executable binaries or dynamic libraries. Consequently, deleting it rarely breaks the core functionality of the commands themselves, but it can cause errors when trying to view help documentation, run scripts that rely on shared resource paths, or update packages that expect these directories to exist. Many users encounter this issue after running cleanup commands like rm -rf mistakenly or during a disk cleanup operation where they confused system folders with temporary caches.
Assessing the Impact
Before attempting recovery, it is important to determine what was actually lost. If you installed packages via Homebrew, Cask, or other package managers, those packages may still function, but their auxiliary files are gone. For example, runningman git might fail if the man pages stored in /usr/local/share/man were removed. Similarly, some development environments might throw warnings about missing shared resources. The good news is that since /usr/local is not a protected system volume on modern macOS versions, the kernel will not prevent you from restoring it, provided you have administrative privileges.
If you are unsure whether you need this specific path, check your current Homebrew installation prefix by running brew --prefix. If it returns /opt/homebrew, then /usr/local is likely legacy or unused, and you can safely ignore the deletion. If it returns /usr/local, then restoration is necessary for a healthy environment.
Solution 1: Reinstalling Homebrew
The cleanest way to restore/usr/local/share and ensure all associated permissions are correct is to reinstall Homebrew. This method guarantees that the directory hierarchy matches the expected state for your version of Homebrew.
First, uninstall Homebrew completely. Open Terminal and execute the following command to remove the existing installation:
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/uninstall.sh)"/usr/local directory is empty or remove any remaining remnants manually using sudo rm -rf /usr/local. Then, install Homebrew again using the standard installer script:
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"/usr/local directory structure, including /usr/local/share, /usr/local/bin, and others. It will also set the correct ownership and permissions, ensuring that your user account can write to these directories without needing sudo for every package installation. This approach is recommended because it avoids potential permission mismatches that can occur when manually creating directories.
Solution 2: Manually Recreating the Directory
If you prefer not to reinstall Homebrew or if you are using a different package manager that relies on/usr/local/share, you can manually recreate the directory. This method is faster but requires careful attention to permissions.
Open Terminal and create the directory with the following command:
sudo mkdir -p /usr/local/shareyour_username with your actual macOS username, which you can find by typing whoami in the terminal.
sudo chown -R $(whoami):staff /usr/local/sharechmod 755 /usr/local/shareVerifying the Fix
After applying either solution, verify that the directory exists and is accessible. Runls -l /usr/local/share to list its contents. If the directory is empty, that is normal for a fresh installation. Test a command that relies on shared resources, such as man ls or brew doctor, to ensure there are no permission errors or missing file warnings.
For more advanced troubleshooting, consider exploring Understanding Finder's Hidden System File Search to better understand how macOS handles system-level directories and why certain paths are treated differently by various applications.
Preventing Future Accidents
To avoid accidentally deleting critical directories in the future, adopt safer practices when cleaning up your system. Never use wildcards like* in rm commands unless you are absolutely certain of the target. Instead of deleting entire directories, move them to the Trash first using mv and wait a few days before permanently deleting. Additionally, familiarize yourself with Create Bootable USB Disk with DVD ISO Image (Mac) concepts to understand how system integrity works, which can help you distinguish between user data and system-critical paths.
Using tools like find with explicit filters can also help you locate and delete only specific types of files rather than entire folders. For instance, to delete old log files, use find /usr/local -name "*.log" -mtime +30 -delete instead of removing the parent directory. This precision reduces the risk of collateral damage to essential structures like /usr/local/share.
Frequently Asked Questions
Will deleting /usr/local/share break my installed apps?
In most cases, no. The directory contains metadata and documentation, not executables. Your installed applications will continue to run, but you may lose access to man pages, icons, or localization files. Reinstalling the affected packages will restore these components.
How do I check if I am using /usr/local or /opt/homebrew?
Run the command brew --prefix in your Terminal. If the output is /opt/homebrew, you are on the default Apple Silicon path, and /usr/local is likely unnecessary. If it outputs /usr/local, you should restore the directory to maintain proper Homebrew functionality.
Can I restore the directory from Time Machine?
Yes, if you have Time Machine backups enabled, you can enter Time Machine, navigate to the /usr/local folder, and select a backup point prior to the deletion. Click "Restore" to bring back the entire directory tree, including /usr/local/share.
Why does Homebrew recommend /opt/homebrew on M1 Macs?
Apple Silicon Macs use ARM architecture, while older Intel Macs use x86. Homebrew uses /opt/homebrew on Apple Silicon to keep native ARM binaries separate from any Rosetta 2 translated x86 binaries. Using /usr/local on M1 can sometimes lead to conflicts if both architectures are present.
What should I do if I get permission denied after recreating the folder?
This usually happens because the directory is owned by root. Use sudo chown -R $(whoami):staff /usr/local/share to transfer ownership to your user account. This allows Homebrew to manage the directory without requiring elevated privileges for every operation.