Linux/Unix Tricks
From Neural Wiki
Lets say that you are running a long program on another computer and you want to make sure that even if your computer was switched off you would not lose your progress, what would you do? Simple use the screen command. The screen program allows you to use multiple windows (virtual VT100 terminals) in Unix, and disconnect from those windows while the processes are still going. You can then reconnect later.
[edit] Copying
To copy the entire contents of a folder to another folder
cp -R /home/files/* /home/backup
[edit] Multiple sessions
One way to run multiple sessions on a host machine is to use Screen. With this program, even if your computer crashes, your session on another machine will stay alive
