If you run a 24/7 software service like Zemanta does, then you spend a lot of time sshing to various servers. This cool article presents a very nice overview of the secure shell command and gives a few fresh tricks that will make your life easier.

SSH: More than secure shell

SSH is a protocol for authenticating and encrypting remote shell sessions. But, using SSH for just remote shell sessions ignores 90% of what it can do. This article covers less common SSH use cases, such as: using passwordless, key-based login; setting up local per-host configurations; exporting a local service through a firewall;...

via: matt.might.net