#!/bin/bash

EXCLUDE_REGEX='(cache|sess).+[a-z0-9]{26,}|_log$|\.log(.gz)?$'
GLOBAL_ARGS="--skipNewer --keepDays 30 --threads 17 --excludeRegex $EXCLUDE_REGEX"

# usage example :
#
# ./backup-b2 $ACCOUNT_ID $APPLICATION_KEY << EOF
#     /var/www/html b2://mybucket/mysite
#     /etc/ssl b2://mybucket/mycerts
# EOF
#
# ./backup-b2 < mybuckets.txt
###########

lock=/run/lock/b2backup

if [ -f "$lock" ]
then
    exit 0
fi
touch "$lock"
trap "rm \"$lock\"" EXIT

b2 authorize-account $@ || exit 1

while read -r A
do
    if [[ "$A" == "" ]]
    then
        continue
    fi
    ionice -n7 nice -n 20 b2 sync $GLOBAL_ARGS $A
done