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I'm brand new to shell scripting and have been searching for examples on how to create a backup script for my website but I'm unable find something or at least something I understand.

I have a Synology Diskstation server that I'd like to use to automatically (through its scheduler) take backups of my website.

I currently am doing this via Automator on my Mac in conjunction with the Transmit FTP program, but making this a command line process is where I struggle.

This is what I'm looking to do in a script:

1) Open a URL without a browser (this URL creates a mysql dump of the databases on the server to be downloaded later). example url would be http://mywebsite.com/dump.php

2) Use FTP to download all files from the server. (Currently Transmit FTP handles this as a sync function and only downloads files where the remote file date is newer than the local file. It also will remove any local files that don't exist on the remote server).

3) Create a compressed archive of the files from step 2, named as website_CURRENT-DATE

4) Move archive from step 3 to a specific folder and delete any file in this specific folder that's older than 120 Days.

Right now I don't know how to do step 1, or the synchronization in step 2 (I see how I can use wget to download the whole site, but that seems as though it will download everything each time it runs, even if its not been changed).

Steps 3 and 4 are probably easy to find via searching, but I haven't searched for that yet since I can't get past step 1.

Thanks!

Also FYI my web-host doesn't do these types of backups, so that's why I like to do my own.

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按顺序回答您的每个问题，然后：

  1. 几个选项，其中最常见的是wget http://mywebsite.com/dump.phpor之一curl http://mywebsite.com/dump.php。

  2. 由于您可以ssh访问服务器，因此您可以非常轻松地使用rsync例如rsync -essh --delete --stats -zav username@mywebsite.com:/path/to/files/ /path/to/local/backup.

  3. 从 获得快照后rsync，您可以使用cd /path/to/local/backup; tar cvf /path/to/archives/website-$(date +%Y-%m-%d).tgz *

  4. find /path/to/archives -mtime +120 -type f -exec rm -f '{}' \;将删除所有超过 120 天的备份。

于 2014-01-29T20:32:12.383 回答