Backup

#!/bin/bash
# By John Mark Perocho
# PixelTracer 2015
# This is a script use to backup wordpress app in webfaction
# Usage: backup [FOLDER LOCATION] -optional [NAME OF TAR FILE]
path=${1%%+(/)}
tarname=$2
pathname=$(echo $1 | sed -r 's/[\.\/]//g')

tarit () {
    echo "Site Backing up ..."
    if [ -f $path/wp-config.php ]; then
        dbname=`grep DB_NAME $path/wp-config.php | cut -d \' -f 4`
        dbuser=`grep DB_USER $path/wp-config.php | cut -d \' -f 4`
        dbpass=`grep DB_PASSWORD $path/wp-config.php | cut -d \' -f 4`
        echo "Folder is Wordpress. Backing up database ..."
        mysqldump -u$dbuser -p$dbpass $dbname -r $path/db.sql
        tar zcf $1.tar.gz $path
        rm $path/db.sql
    else
        echo "Folder is not Wordpress"
        tar zcf $1.tar.gz $path
    fi
}

checktar () {
    echo Backing up ${path%%+(/)} to $1.tar.gz
    if [ -f $1.tar.gz ]; then
        read -p "$1.tar.gz already exist. Do you want to overwrite? [Y/N]" yn
        case $yn in
            [Yy]* ) tarit $1
                    exit;;
            [Nn]* ) exit;;
            * ) exit;;
        esac
    else
        tarit $1
    fi
}

if [[ $# -eq 0 ]]; then
    echo 'Usage: backup [FOLDER LOCATION] -optional [NAME OF TAR FILE]'
    echo 'Example: bash backup /var/www www'
    exit 1
else

    if [[ ! -d $path ]]; then
        echo "ERROR: Can't find directory..."
    else
        if [[ -z "$tarname" ]]; then
            checktar $pathname
        else
            checktar $tarname
        fi

    fi
fi