progress-bar2

#!/usr/bin/env bash

BATCHSIZE=1
BAR_CHAR='|'
PAD_CHAR=' '
LENGTH=50

BAR_POOL=$(eval "printf \"${BAR_CHAR}%.0s\" {1..$LENGTH}")
PAD_POOL=$(eval "printf \"${PAD_CHAR}%.0s\" {1..$LENGTH}")

# ##############################################################################

progress-bar() {
        local current=$1
        local len=$2

        local perc_done=$((current * 100 / len))
        local num_bars=$((perc_done * LENGTH / 100))

        echo -ne "[${BAR_POOL:0:num_bars}${PAD_POOL:0:LENGTH-num_bars}] $current/$len ($perc_done%)\r"
}

process-files() {
        local files=("$@")

        sleep .01
}

# ##############################################################################

shopt -s globstar nullglob

echo 'finding files'
files=(./**/*cache)
len=${#files[@]}
echo "found $len files"

for ((i = 0; i < len; i += BATCHSIZE)); do
        progress-bar "$((i+1))" "$len"
        process-files "${files[@]:i:BATCHSIZE}"
done
progress-bar "$len" "$len"

echo