mjschultz

Emphasizing the "assuming this isn't a hoax" part, even if it is correct, I don't think it is a life-changing deal.

Computer Scientists have been assuming for years that P does not equal NP, so they've been doing research with that assumption already in place. Proving that the assumption is correct won't hugely change anything.

I'm not trying to knock down the greatness of this proof, but the repercussions aren't going to be that major.

I usually do use scp, but it becomes problematic when there are symlinks hanging around. scp just follows them and ends up copying the same file many times.

This is especially bad if you have a directory structure that references a higher-level directory.

Along the same lines as number 1. You can transfer a directory with

  $ ssh user@host "tar cvzf - /path" | tar xvzf - /path

One of the biggest 'ah-ha' moments I had with SSH was that I could create my own hosts with certain properties. For example, if I wanted a backup server with a special user and key I could add it to my ~/.ssh/config file

  Host backup-server
      HostName backup.example.com
      User backup
      IdentityFile ~/.ssh/backup_dsa

Then just have a shell script run

  $ ssh backup-server

It ended up working really well.

Also, control sockets.