rsync同步机器文件

#!/bin/bash
#同步文件
from_dir=$1
to_dir=$2
sync_dryrun()
{
        fr=$1
        to=$2
        echo 
        echo -e "\033[1m ...dryrun... \033[0m"
        rsync -vr --delete ${fr} ${to} --dry-run --exclude='.svn/'
        echo -e "\033[1m ...dryrun... \033[0m"
        echo
}
sync_server()
{
        fr=$1
        to=$2
        echo 
        echo -e "\033[1m ...syncing... \033[0m"
        rsync -avr --progress --delete ${fr} ${to} --exclude='.svn/'
        echo -e "\033[1m ...done... \033[0m"
        echo
}

if [[ -z $from_dir ]] || [[ -z $to_dir ]]; then
        echo "Usage: $0 from_dir to_dir"
        exit 0;
fi

sync_dryrun $from_dir $to_dir
echo -n "Want to sync?(y/n):"
read R
if [ "${R:-y}" = "y" ];then
        sync_server $from_dir $to_dir
else
        echo "Nothing done,bye"
fi