Split the files of a steam depot with maximum size of each group

depot-downloader-splitter.sh

#!/bin/bash
# A manifest file generated from https://github.com/SteamRE/DepotDownloader must be passed to the script.
# It should contain only the file lines.
# Use this script like bash depot-downloader-splitter.sh mainfest.txt 40000000000
rm part*.txt # remove old files
MAX_SIZE=$2 # maximum size of each part
CURRENT_SIZE=0
COUNTER=1
while read -r line; do
	line=$(echo $line) # trim each column
	size=$(cut -d' ' -f1 <<< "$line")
	if [[ $(cut -d' ' -f4 <<< "$line") != "0" || "$size" == "0" ]]; then # skip folders and files with zero size
		echo "skipped $line"
		continue
	fi
	if [[ $((CURRENT_SIZE + size)) -gt $MAX_SIZE ]]; then # if size is more than specified amount, move to new file
		COUNTER=$((COUNTER+1))
		CURRENT_SIZE=0
	fi
	CURRENT_SIZE=$((CURRENT_SIZE + size))
	echo $(cut -d' ' -f5 <<< "$line") >> "part$COUNTER.txt"
done <<< $(sort -r "$1")