PATH conflicts, duplicate managers, broken aliases — BrewBox reads your shell config and tells you exactly what's wrong.
Every time you type 'python', your shell runs through a gauntlet of PATH entries, alias definitions, version manager shims, and shell function overrides before executing anything.
When pyenv and Homebrew both install Python, when nvm gets sourced twice in .zshrc, when an old alias overrides a new binary — you end up running the wrong version without knowing it.
BrewBox parses your actual shell config files and traces the exact resolution chain for every command. No guessing. No trial and error. Just the truth.
Reads .zshrc, .zprofile, .bashrc, .bash_profile, .profile, and any sourced files. Extracts every export, alias, source, and eval statement with line numbers.
.zshrc · .zprofile · .bashrc · .profileVisualizes every entry in your $PATH in order of priority. For each command name that appears in multiple locations, shows which one wins and why.
/opt/homebrew/bin · /usr/local/bin · ~/.pyenv/shimsDetects pyenv + brew Python ordering issues, nvm duplicate source calls, rbenv shim conflicts, asdf vs mise overlaps. Each conflict is explained with a fix suggestion.
Every detected issue comes with a specific fix: a line to add, move, or remove from your config. BrewBox never edits your files automatically — you review and apply manually.
Homebrew's Python is earlier in PATH than pyenv's shim directory. pyenv's version switching silently breaks.
nvm.sh is sourced twice — once in .zshrc and once in .zprofile. Doubles shell startup time and can cause unexpected behavior.
Two alias python= lines in the same file. The second silently overrides the first. The one you see first isn't the one that runs.
pyenv init runs before PATH is fully set, so pyenv shims are later overridden by Homebrew entries added further down the file.
A directory in PATH is world-writable. Any user could drop a malicious binary that gets executed instead of the legitimate one.
A PATH entry points to a directory that no longer exists. Causes a slight performance hit on every shell command.
PATH & shell diagnosis requires BrewBox Pro. Try it free for 5 days.