csc360-a1-shell/dependency-dir

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#!/bin/sh
if [ $(uname -s) = Darwin ]; then
if command -v brew >/dev/null 2>/dev/null; then
echo $(brew --prefix)/opt
elif [ -x /opt/homebrew/bin/brew ]; then
echo $(/opt/homebrew/bin/brew -- prefix)/opt
elif [ -x $HOME/homebrew/bin/brew ]; then
echo $($HOME/homebrew/bin/brew --prefix)/opt
elif [ -x /usr/local/bin/brew ]; then
echo $(/usr/local/bin/brew --prefix)/opt
else
echo /usr/local
fi
else
echo /usr
fi