This example shows a single command for fixing Homebrew “Permission Denied” errors on macOS, displayed as a code snippet in a Markdown document. The visualization highlights the exact shell command using `sudo chown -R` to recursively change file ownership under the Homebrew prefix. It relies on the `$(whoami)` and `$(brew --prefix)` command substitutions to target the current user and Homebrew installation path. The code is presented as plain text within the gist’s Markdown file, with no interactive or graphical elements.