GNU screen

Run

$ screen

Screen

Ctrl-a c  // create
Ctrl-a p  // previous
Ctrl-a n  // next
Ctrl-a number // Jump to number

Detach

Ctrl-a d

Resume

$ screen -r

Split

Ctrl-a S      // Horizontal
Ctrl-a |      // Virtical
Ctrl-a [TAB]  // Change
Ctrl-a X      // Close

changed February 17