scripts/server_file_backup.sh

#!/bin/bash
# Usage: ./server_file_backup.sh $BACKUP_DIR $SAVE_DIR $EXCLUDE_DIR
# Or: curl -s https://git.immiles.com/miles/scripts/raw/master/server_file_backup.sh | bash -s $BACKUP_DIR $SAVE_DIR $EXCLUDE_DIR

#set -ex

# Set Var
BACKUP_DIR=$1
SAVE_DIR=$2
EXCLUDE_DIR=$3
DATE=`date +"%Y%m%d_%H%M%S"`
LOG_FILE=$BACKUP_DIR/file_backup.log
FILE_BASENAME=`echo $BACKUP_DIR | sed 's#/#_#g'`
FILE_BASENAME=${FILE_BASENAME:1}

RETENTION=$((14*24*60))  # 2 weeks
KEEP=7

echo "--------------------------$DATE------------------------" >> $LOG_FILE
echo "[BEGIN] Backup [$BACKUP_DIR]" >> $LOG_FILE

# Backup
tar --exclude="$EXCLUDE_DIR" -v -jpcf $SAVE_DIR/$FILE_BASENAME.$DATE.tar.bz2 $BACKUP_DIR >> $LOG_FILE 2>&1

if [ $? == "0" ];then
    echo "[SUCCESS] Files in [$SAVE_DIR] backup" >> $LOG_FILE
    echo "--------------------------$DATE------------------------" >> $LOG_FILE
else
    echo "[FAIL] Files in [$SAVE_DIR] backup" >> $LOG_FILE
    echo "--------------------------$DATE------------------------" >> $LOG_FILE
    exit 1
fi

# Clean up
find $SAVE_DIR -name "*.tar.bz2" -type f -printf '%T@ %p\n' -mmin +$RETENTION | sort -nr | tail -n +$KEEP | awk '{ print $2 }' | xargs -r rm >> $LOG_FILE 2>&1

exit 0