Backup script with aes-256-cbc encryption and automatically spits the output into 4GB chunks (for fat32 file systems)

backup.sh

#! /bin/bash
if ! [ $# -eq 1 ] ;then
        echo "Ha mappen du vil ha backup av som argument"
        exit 1
fi

echo "Navn på backupen:"
read name

echo "Passord:"
read pass

folder=$1

org_size=`du -bs $folder |cut -f1`
echo "Størrelse i byte: "$org_size

date=`date +%Y.%m.%d`

echo "Starter:"

tar cf - "$folder" |pv -cN Filer -s $org_size |gzip - |openssl aes-256-cbc -pass pass:"$pass" |split -a3 -b 4000m - "$date-$name.tgz.aes-256-cbc-"

md5sum "$date-$name.tgz.aes-256-cbc-"* > "$date-$name.tgz.aes-256-cbc.md5"

Same thing as a single command:

dir=/media/1TB/bilder/ && echo "Navn på backupen:" && read name && dato=`date +%Y.%m.%d` && tar cf - "$dir" 2>/dev/zero|pv -WcN Filer -s `du -bs "$dir" |cut -f1` |gzip - |openssl aes-256-cbc -kfile pa|split -a3 -b 4000m - "$dato-$name.tgz.aes-256-cbc-" && md5sum "$dato-$name.tgz.aes-256-cbc-*" > "$dato-$name.tgz.aes-256-cbc.md5"