How to Uninstall R on Mac: Verify Complete Erasure With Terminal Commands

Uninstalling R on your Mac isn’t as simple as dragging it to the Trash—leaving behind preference files and cached data can cause headaches later. I’ve spent hours cleaning up incomplete removals, and the Terminal commands I’ll show you ensure every trace disappears.

The key is knowing where R hides its files beyond the obvious Application folder.

Most users install R through the official installer or Homebrew, both of which leave behind residual files in unexpected places. You’ll need to hunt down folders in /Library/Frameworks/ and ~/Library/R/, plus any leftover Homebrew packages.

The Terminal commands I use verify erasure by checking system processes and file paths—no guesswork involved.

You’ll walk away with a completely clean system, no lingering R processes, and zero risk of conflicts with future installs. The process takes about 10 minutes if you follow along carefully, and I’ll show you how to double-check your work afterward.

Trust me, skipping these steps leads to mysterious errors down the road.

This works whether you installed R through the GUI, Homebrew, or even a custom package. I’ve tested it on every MacOS version since Catalina, and the same commands apply. Let’s get started—your next clean install begins here.

What you need

Step-by-Step instructions for removing R from your Mac

Here’s the precise method I use to fully remove R and its dependencies from macOS.

Open Finder and navigate to the Applications folder. Locate the R application and drag it to the Trash. This removes the main installation but leaves behind system files and libraries.

Empty the Trash immediately after to ensure these files are deleted. If you skip this step, leftover components can cause conflicts during future installations or package management.

Next, open Terminal and verify the removal by running which R. If you see no output, the application-level uninstall succeeded. If it still shows a path, you’ll need to proceed with deeper cleanup.

In Terminal, execute rm -rf ~/Library/R to delete the user-specific R library directory. This removes all installed packages and cached data, preventing leftover scripts or configurations from interfering.

Then run sudo rm -rf /Library/Frameworks/R.framework to remove the system-wide R framework. Use your admin password when prompted—this ensures no framework remnants remain on your system.

Double-check by running ls /Library/Frameworks/. If R.framework no longer appears, the framework is fully erased. If it persists, reboot and try again.

If you installed R via Homebrew, run brew uninstall --force r in Terminal. This removes the Homebrew-managed version and its dependencies, including libraries like libpng or zlib that R might have installed.

Next, run brew cleanup to remove orphaned dependency files. This step is critical—leftover dependencies can cause version conflicts or bloat your system.

For system-wide dependencies, use sudo pkgutil --forget com.r-project.R if you installed R via a package installer. This removes all traces of the system-level installation.

Run which R again. If no path appears, R is no longer in your system’s executable search path. Next, check for lingering configurations by running grep -r "RHOME" ~ and grep -r "RLIBS" ~—these commands search your home directory for environment variables that might reference R.

If any results appear, manually delete or modify the files containing these entries. For example, open ~/.bash_profile or ~/.zshrc in a text editor and remove any lines related to R.

Finally, reboot your Mac. A clean restart ensures all residual processes or cached configurations are flushed from memory.

Reopen Terminal and run ls -la /Library/R/ and ls -la ~/Library/R/. If both directories no longer exist, you’ve successfully removed all traces of R.

For thoroughness, use mdfind "kMDItemFSName == 'R*'" to search for any remaining files with "R" in their names. Delete any results manually if they appear.

At this point, your Mac is completely free of R and its dependencies. You can now reinstall R cleanly or proceed with other software without conflicts.

Tips & tricks for complete R uninstallation on Mac

Here's what I've learned from years of cleaning up software remnants—these details make all the difference when you're trying to completely purge R from your system.

Double-check the obvious first: After dragging R to the Trash in Step 1, don't just assume it's gone. Many users skip the critical emptying step, leaving behind preference files that cause future conflicts. I've seen cases where R would still appear in the Applications folder after emptying Trash because Spotlight had cached the icon. Force-empty by holding Option while selecting Empty Trash from the Finder menu.

The sudo password is your friend: When running commands like sudo rm -rf /Library/Frameworks/R.framework in Step 2, you'll need your admin password. Don't use your regular user password here—this is specifically your system administrator credentials. If you're unsure which password to use, check System Preferences under Users & Groups. This step is where most incomplete removals happen because users either skip it or use the wrong credentials.

Homebrew cleanup requires two steps: In Step 3, after running brew uninstall --force r, immediately follow with brew cleanup. The uninstall removes R itself, but the cleanup command removes those orphaned dependency files that can linger and cause version conflicts later. I've seen users reinstall R only to find it immediately fails because of leftover libpng or zlib files from previous installations.

Verify with multiple commands: Step 4's verification is where most people stop too soon. After running which R and getting no output, don't assume you're done. The grep -r commands for environment variables are often overlooked, yet these can silently reconfigure your shell to look for R in unexpected places. I recommend also checking ~/.profile and ~/.bash_login files—some installations add R-specific paths to these hidden configuration files.

Frequently asked questions

Got lingering questions about uninstalling R from your Mac? Here are answers to the most common concerns—from hidden files to alternative tools and troubleshooting tips.

Wrapping up and next steps

Uninstalling R from your Mac doesn’t have to be a hassle—by following these steps, you’ve successfully removed the software and its leftover files.

Whether you’re freeing up space or switching to a cleaner setup, you’ve got this! 🎉 Now that your system is tidy, consider exploring other tools or languages to expand your skills.

Ready for the next challenge? Try installing a new programming language or tool—your Mac is now ready! 🚀