Run "cargo sweep" in all direct subfolders and report disk space saved

rsweep.sh

#!/bin/bash

before=$(du -bs | cut -d$'\t' -f1)
for d in $(ls -1); do
    if [[ -e "$d/target" ]]; then
        echo "------------ $d -------------"
        cd "$d"
        cargo sweep -i
        cd ..
    fi
done
after=$(du -bs | cut -d$'\t' -f1)
echo "Sweep done, before $before, after $after"

saved=$(echo "($before - $after)/1048576" | bc)

echo "Saved $saved MB"