Every once in awhile, I need to backup a large directory from another computer. This can be done by creating a zip or tar of the files you are looking to save and then copying those zips to the other computer. But what it you have a very large directory and not enough room to store the extra file. Here is a way to use tar over ssh:

ssh tar zcvf – /wwwdata | ssh root@backupserver.mydomain.com “cat > /backup/wwwdata.tar.gz”

Did you know? You can Set file timestamp using touch command. One way to do this is:
touch -c -t YYMMDDhhmm filename.txt

Learnable
www.learnable.com
Brought to you by Sitepoint. They have created a site to host their on-line classes and a place for people to create their own as
well.

Udemy
www.udemy.com
Just checking this one out, I found some interesting courses, but many seem to be placeholders for classes to come later.

LiveMind
www.livemind.com
Just read about this one and have not looked thorugh it very much yet.