1, Install Cygwin

download Cygwin http://www.cygwin.com/ and install on your PC

2, Generating public/private dsa key pair, do not enter password ( when asked for to enter passphrase, just press [ENTER] key twice.)




$ ssh-keygen -t dsa


Generating public/private dsa key pair.
Enter file in which to save the key (/home/Alan/.ssh/id_dsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/Alan/.ssh/id_dsa.
Your public key has been saved in /home/Alan/.ssh/id_dsa.pub.
The key fingerprint is:
5a:56:7e:7d:4b:00:a0:56:09:34:f0:8f:dd:71:32:9c Alan@MyLaptop

3, Copy public key to remote server:

scp ~/.ssh/id_dsa.pub root@xxx.com:.ssh/authorized_keys

4, Make sure you keep your laptop in safe place because now anybody can login to your remote server from your labtop without a password.

5, Create a backup directory on USB disk and creacte a backup script

$ mkdir /cygdrive/f/backup
$ mkdir /cygdrive/f/backup/disk2
$ mkdir /cygdrive/f/backup/home
$ mkdir /cygdrive/f/backup/root

$vi backup.sh

#!/bin/sh

rsync --exclude '*.log' -avz -e ssh root@xxx.com:/home/ /cygdrive/f/backup/home
rsync $ -avz -e ssh root@xxx.com:/disk2 /cygdrive/f/backup/disk2
rsync $ -avz -e ssh root@xxx.com:/root /cygdrive/f/backup/root

$chmod 755 ./backup.sh

6, Create a cron job

crontab -e

0 0 * * * //backup.sh >/dev/null &
#* min (0 - 59) * hour (0 - 23) * day of month (1 - 31) *month (1 - 12) day of week (0 - 6) (Sunday=0)

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