This script searches for unused Sass variables in a given directory by finding occurrences and counting them. Could benefit from optimization.

find-unused-sass-variables.sh

#!/bin/bash

# Usage: ./unused.sh

read -p "Enter a directory: " dir

if [ ! -d "$dir" ]; then
    echo "Not a valid directory."
    exit 1
fi

echo "Finding unused variables. This might take some time..."

vars=$(grep -orh '\$\w\+' "$dir"/*.scss | sort -u)

for var in $vars; do
    count=$(grep -roh "$var" "$dir"/*.scss | wc -l)
    if [ "$count" -eq "1" ]; then
        printf "Occurrences of \"%s\": %s\n" "$var" "$count"
    fi
done