Software⏱️ 2 min read📅 2026-06-03

How to Fix: How do I fix the "You don't have write permissions into the /usr/bin directory" error when installing Rails?

Gem installation error due to lack of write permissions in /usr/bin directory.

Quick Answer: Run the command 'sudo gem install rails --pre' with elevated privileges to resolve the issue.

To resolve the "You don't have write permissions into the /usr/bin directory" error when installing Rails, you need to change the ownership of the /usr/bin directory to your current user.

🚀 How to Resolve This Issue

Method 1: Change Ownership

  1. Step 1: Open the Terminal and run the command `sudo chown -R $USER:$GROUP /usr/bin

Method 2: Change Permissions

  1. Step 1: Open the Terminal and run the command `sudo chmod -R u+w /usr/bin

✨ Wrapping Up

After executing either method, you can try installing Rails again using the command `gem install rails --pre` to see if the error persists.

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