rsync remove old backup on remote PC

Good day

I use this script to backup my home PC to remote PC

Code:

---

#!/bin/bash
#Todays date in ISO-8601 format:
DAY0=`date -I`

#Yesterdays date in ISO-8601 format:
DAY1=`date -I -d "1 day ago"`

#The source directory:
SRC="/home/honza/Downloads/"

#The target directory:
TRG="honza@192.168.80.197:/media/zaloha/$DAY0"

#The link destination directory:
LNK="/media/zaloha/$DAY1"

#The rsync options:
OPT="-avh --delete --link-dest=/honza@192.168.80.195:/media/zaloha/$DAY1"

#Execute the backup
rsync $OPT $SRC $TRG

#29 days ago in ISO-8601 format
DAY3=`date -I -d "3 days ago"`

#Delete the backup from 29 days ago, if it exists
if [ -d /honza@192.168.80.197:/media/zaloha/$DAY3 ]
then
rm -R /honza@192.168.80.197:/media/zaloha/$DAY3
fi

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I dont't know how to delete old backup than 3 days. Script works well when I backup on the same PC but not on a remote.

Code:

---

--link-dest arg does not exist: /honza@192.168.80.195:/media/zaloha/2013-03-15

---

and old backups are not deleted.

thank you

You should remove the leading / from /honza@192.168.80.195:/media/zaloha/...
The way it is, the leading slash makes your destination appear local.
Also, when testing the existence of old backup directories, you will have to use tools like sftp, if the remote dir is accessed by SSH.

Personally, I would use sshfs to mount the remote machine locally, then perform rsync and rm operations on the mounted location.

Code:

---

sshfs honza@192.168.80.195:/media/zaloha /local-dir-for-rsync # mount the remote dir locally
<script operations>
fusermount -u /local-dir-for-rsync # unmount the remote dir

---

Cheers!

rsnapshot is a standard debian/ubuntu package that does all that for you.