MTA:SA Automatic Mapping Server Backups

#!bin/sh
#title          :   backup.sh
#description    :   This script will create a backup of MTA Server resource files
#author         :   Daniel 'dnlk' Keller
#version        :   1.1
#notes          :   requires root access, zip (apt-get install zip), usage with cron recommended (apt-get install cron).

#                   cron usage:
#                       m h dom mon dow
#                       0 1  *   *   *      will run this script at minute 0, hour 1 on every day of the month, in every month and at every day of the week. Basically every day at 1am
#
#                       add this line to /etc/crontab, adjust the path and you're done.
#                       0 1 * * * root bash /path/to/backup.sh

BACKUP_DIR="/home/gameserver/.backups"
SERVER_DIR=("/home/gameserver/mta-*")
#   Alternatively you can use an array of directories for SERVER_DIR instead of a pattern
#   e.g.
#   SERVER_DIR=(
#       /path/to/server1
#       /completly/different/path/to/server2
#       /oh/hey/here/is/server3
#   )

IGNORED_DIRS=(
    [admin]
    [editor]
    [gamemodes]
    [gameplay]
    [managers]
    [web]
    [tools]
    [scripts]
    editor_test
    editor_dump
)

find $BACKUP_DIR -type f -mtime +7 -exec rm {} \; # Find files older than 7 days and delete them.

for CURRENT_DIR in ${SERVER_DIR[@]}; do
    CURRENT_DIR="$CURRENT_DIR/mods/deathmatch/resources"
    BACKUP_DIRS=()
    for MAP_DIR in $CURRENT_DIR/*; do
        if [ -d "$MAP_DIR" ]; then
            MAP_DIR=${MAP_DIR##*/}
            [[ ! "${IGNORED_DIRS[*]}" == *"$MAP_DIR"* ]] && BACKUP_DIRS+=($MAP_DIR)
        fi
    done
    zip -r $BACKUP_DIR/$(stat -c '%U' $CURRENT_DIR)-$(date '+%d.%m.%Y-%H:%M').zip -- ${BACKUP_DIRS[@]} > /dev/null 2>&1
done
exit