curlable backup script

backup

#!/bin/bash

if [ -z ${1} ]; then
    echo "usage: backup [static|dynamic]"
    exit 1
fi

# see https://sipb.mit.edu/doc/safe-shell/
set -euf -o pipefail

if [ $1 == "static" ]; then
    source="/mnt"
    target="/clone"
elif [ $1 == "dynamic" ]; then
    source=""
    target="/clone"
fi

if [ ! -d "$source/home" ]; then
    echo "mount the PRIMARY drive onto $source/"
    exit 1
fi

if [ ! -d "$source/boot/EFI" ]; then
    echo "mount the PRIMARY drive EFI partition to $source/boot"
    exit 1
fi

if [ ! -d "$target/home" ]; then
    echo "mount the CLONE drive onto $target"
    exit 1
fi

if [ ! -d "$target/home/ben" ]; then
    echo "mount the CLONE drive home partition onto $target/home"
    exit 1
fi

if [ ! -d "$target/boot/EFI" ]; then
    echo "mount the CLONE drive EFI partition to $target/boot"
    exit 1
fi


declare -a exclude=(
    '$source/.snapshots/*'
    '$source/home/.snapshots/*'
    '$source/dev/*'
    '$source/proc/*'
    '$source/sys/*'
    '$source/tmp/*'
    '$source/run/*'
    '$source/mnt/*'
    '$source/clone/*'
)

excluded=""

for path in "${exclude[@]}"; do
    excluded="$excluded --exclude=$path"
done

echo sudo rsync -aAX --info=progress2 --delete $excluded $source/ $target