# Created on savesnippets.com · https://savesnippets.com/scWiRTNHD4IKjJ
progress_bar() {
    local current="$1" total="$2" width="${3:-40}"
    local pct=$(( current * 100 / total ))
    local filled=$(( current * width / total ))
    local empty=$(( width - filled ))
    printf "\r[%s%s] %d%% (%d/%d)" \
        "$(printf '█%.0s' $(seq 1 $filled))" \
        "$(printf '░%.0s' $(seq 1 $empty))" \
        "$pct" "$current" "$total"
}

TOTAL=50
for i in $(seq 1 $TOTAL); do
    sleep 0.05               # imagine real work here
    progress_bar "$i" "$TOTAL"
done
echo   # newline after the bar