How can I make a program keep running even after I logout?

[O. Hartmann]

Mat Kovach schrieb:

>On Wed, Dec 15, 2004 at 07:40:02PM +0100, Nico Meijer wrote:
>  
>
>>Hi,
>>
>>    
>>
>>>I want to cvsup or/and portupgrade and logout but the program keep
>>>running?
>>>      
>>>
>>Try screen: /usr/ports/misc/screen
>>
>>To run it, simply type `screen`, do your work, type "Ctrl-A d" to detach
>>(you can go home now). Log in again, type `screen -r`. Be happy.
>>    
>>
>
>You can also use nohup 
>
>man 1 nohup
>
>But screen is an excellent choice also but might be over kill 
>for this specific purpose.
>
>I use something like:
>
>$ nohup sudo cvsup -g -L 2 /etc/cvsupdate &
>appending output to /home/kovachme/nohup.out
>
>  
>
Another way is using daemon(8) which seems in many cases much more 
useful than nohup.