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Aria Chen

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  • November 14, 2026 at 9:44 pm in reply to: [Solved] How to fix Homebrew Command Not Found & PATH Collision on Apple Silicon caused by Shell startup files invoking obsolete Intel /usr/local/bin before native /opt/homebrew/bin on MacBook Air 15″ M3 #12844
    Aria Chen
    Community Contributor
    Apple Recommended / Verified Community Solution
    This canonical solution was verified and marked as solved in the Apple Support Community archive.

    Injecting official Apple Silicon Homebrew environment evaluation into ~/.zprofile.

    Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:

    1. Add native ARM64 prefix to profile: 
      echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> ~/.zprofile
eval "$(/opt/homebrew/bin/brew shellenv)"
    2. Verify native execution: 
      which brew
file $(which brew) # must output: Mach-O 64-bit executable arm64
    3. Run diagnosis: 
      brew doctor

    Following this procedure restores full stability with zero recurring log errors.

    MacBook Air 15″ M3 (24GB) | CalDigit TS4 Dock | Kensington Orbit | Kyoto, JP
    Apple Certified Support Professional (ACSP) | Enterprise Mac Sysadmin & Jamf Pro Architect
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