dtach
From it's website, dtach is a tiny program that emulates the detach feature of screen, allowing you to run a program in an environment that is protected from the controlling terminal and attach to it later.
Installation
Usage
Create a new session
To create a new session running command and attach to it:
$ dtach -c socket command
For example, to create a new session running bash with the socket located at /tmp/bashsession:
$ dtach -c /tmp/bashsession bash
To create a new session running command without attaching to it:
$ dtach -n socket command
Attach to a session
To attach to an existing session:
$ dtach -a socket
To attach to an existing session, and if not already existing, create it:
$ dtach -A socket
Detach from a session
In an attached session, type Ctrl+\. This key combination can be modified with the -e flag.
Tips and tricks
To share a session with another user, simply #Create a new session and change the permissions on the socket file such that the other user can read and write to it. Then the other user should be able to attach to the session.