I sometimes see people read about NNCP and wonder “This sounds great! But… what can I do with it?” This page aims to answer those questions. Either before or after reading this page, you might find these three pages useful: NNCP NNCP Concepts Getting Started with NNCP Asynchronous Communication A Quick Word on Background NNCP frees you from the tyranny of online. Compared to something like ssh, with NNCP, you trade latency for reliability and flexibility.| www.complete.org
“Airgap” refers to a computer (or network) that is physically disconnected from a larger network and the Internet. This word originated in the pre-wifi days, when there was literally air between machines; that is, no connecting communication cables. Nowadays, it also refers to a lack of radio (wifi or otherwise) communication. That is, it is complete physical isolation. Airgapped systems are often desirable in situations where Computer Security is important. For instance:| www.complete.org
In my writing about dar, I recently made that point that dar is a filesystem differ and patcher. We can exploit this property to do something really cool: build an Asynchronous rsync. What does that mean? rsync is a tool that has been in may *nix admins’ toolboxes for years. Typically used over ssh, rsync will compare the state of a local directory tree (or file) to the state of a remote tree, and efficiently make the remote match the local (or vice-versa).| www.complete.org
dar is a Backup and archiving tool. You can think of it as as more modern tar. It supports both streaming and random-access modes, supports correct incrementals (unlike GNU tar’s incremental mode), Encryption, various forms of compression, even integrated rdiff deltas. It is an ideal tool for backups over Asynchronous Communication for systems that don’t or can’t run ZFS. Homepage: http://dar.linux.free.fr/ I have written a lot about Dar: I first wrote about Dar in my 2008 roundup of ba...| www.complete.org