init.rc script fails because tty detach

[manoj_pu]

Burslan,

You are exactly right.

But that does not work to "demonize" the mwm process in the system startup.

Do you have any other catch on it???

[Mel Burslan]

To the best that I know daemons are written, compiled and linked to be daemons. You can not just expect any executable to be run as a daemon in the full meaning of it. nohup and running it in the background as a detached process is the best thing you can do without re-writing the whole program yourself.

Some programs have the option of running themselves ad daemons, like sendmail, with proper command switches but a quick glance over mwm does not show anything close to this.

Also, running a process in the background, doing whatever you are expecting from it to do, is not much different than the actual daemon functionality, maybe with a bit of extra overhead due to shell handling etc. What else are you after by runnig it as a *true* daemon ?

[A. Clay Stephenson · Accepted solution]

If you must daemonize a process using a scripting language then Perl is your best bet. It lets you use setsid() to detach the process from a controlling terminal. Try the attached Perl script and make your changes in the "exec" function. The idea is that the process forks() then the parent is allowed to exit; the child then sets up any signal handlers and does an exec(). It's also a good idea for all daemons to to a cd to / so that umounts won't fail with "device busy".

[manoj_pu]

All,

Finally the the story end successfully!!!
Special thanks to Stephenson for wonderful perl script.

Thanks & Best Regards

Manoj