On 2008 Oct 20, at 15:42, Rouan van Dalen wrote:

I would like to write a very very simple haskell daemon that disconnects itself from the terminal and sists in the background doing something.

What is the easiest way to go about this. I have tried several things but can't seem to get the process disconnected from the terminal.

System.Posix.Process.createSession makes the current process a separate session with no controlling terminal assigned to it. (Acquiring a controlling terminal afterward is, sadly, nonportable: some systems do it automatically unless you open() with O_NOCTTY, some require you to open and ioctl(TIOCSCTTY).) -- brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery@kf8nh.com system administrator [openafs,heimdal,too many hats] allbery@ece.cmu.edu electrical and computer engineering, carnegie mellon university KF8NH