simple backup script using rsync + tar

backup.sh

#!/bin/bash
today=$(date +%m%d%Y)
targets=( '/etc' '/home' '/root' '/var/www' )
backup_root='/backups'
backup_dir=${backup_root}'/'${today}
log='/var/log/backup.log'

echo "$(date +%D" "%r): Beginning backup" >> $log
mkdir -p $backup_dir

for i in ${targets[@]}; do
    rsync -Ra $i ${backup_dir}
    if [[ $? -eq 0 ]]; then
        echo "Successfully backed up $i" >> $log
    else
        echo "Failed backing up $i" >> $log
    fi
done

tar -czf $backup_dir'-backup.tgz' $backup_dir &> /dev/null
if [[ $? -eq 0 ]]; then
    echo "Successfully compressed ${backup_dir}" >> $log
else
    echo "Failed compressing ${backup_dir}.tgz" >> $log
fi

# Remove uncompressed, duplicated files.  Backups are saved in $backup_root
rm -rf $backup_dir

echo "Removing backups older than 30 days" >> $log
find $backup_root -mtime +30 >> $log
find $backup_root -mtime +30 -exec rm {} \;

echo "$(date +%D" "%r): Backup complete" >> $log