[ILUG] "NT Service" in Linux

[John_White at dell.com]

Vanyak,
	what you are talking about here is called a daemon in the UNIX
world. These can be configured to start up automatically, or shut down
automatically whenver your system changes 'modes' (starting up & shutting
down are just 2 of these modes). So you can have different services
configured to run depending on which mode your system is running in.

e.g,  mode 1 is single user mode, and is usualy only used for emergency
maintainence
	(a windows analogy would be 'safe mode' in windows 95)
	mode 3 is usually full multiuser mode
	mode 5 is usually full multiuser mode with X
	mode 6 is usually shutdown mode.

	Depending on what mode you tell your system to enter, it kills the
appropriate services & starts others.

	Incidentally, it is very much easier to write a daemon in unix than
it is in NT. (using C/C++ that is). You don't have to worry about a service
control manager or anything like that. Almost anything can act as a daemon,
and you can (and quite a few programs do) just write a program that reads
from stdin, and writes to stdout. When called by inetd all incoming network
traffic is re-routed to stdin on your program, and all data your program
sends to stdout is sent across the network to the remote client.

John.

	

-----Original Message-----
From: Vinayak Risbud [mailto:vinayak_risbud at asiansonly.net]
Sent: 21 January 2000 11:22
To: ilug at linux.ie
Subject: [ILUG] "NT Service" in Linux


Hi friends,

In NT we have a concept called, "Services",  which is basically
an EXE file,  which will be automatically started by the OS , while
booting,  and the Service will be stopped by the OS while shutting
down ?

Can any body tell me,  Is this possible with Linux OS.  What is the
Linux Concept ,  which is parallel to NT Serivces ?  

If this is possible,  can anybody tell me,  where can I find help 
about it ?

Thanks in Advance

regards

Vinayak P Risbud

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