A guide to migrating SVN repositories to Git while preserving complete commit history. Uses git svn init and git svn fetch to import with all history, then git svn can be used to continue pushing back to SVN if needed, allowing gradual transition while maintaining compatibility.

Code examples for generating MD5 hashes in three programming languages. Shows both quick one-line hashing and the update method for hashing large data in chunks. Notes about using SHA-1 with salt instead of MD5 for password storage to prevent rainbow table attacks.

A quick tip for preventing SSH connections from dropping due to inactivity by editing the ssh_config file to send keep-alive packets every 30 seconds, ensuring stable connections on networks with aggressive timeout settings.