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Full Discussion: Need advice on coding a daemon
Operating Systems Linux Need advice on coding a daemon Post 302308487 by Housni on Saturday 18th of April 2009 04:41:08 PM
Old 04-18-2009
Need advice on coding a daemon
I hope this is the right forum to post this.

I need a little advice on something.

I want to create a daemon to run on a Linux server and this daemon should:
1. capture the `./configure` command so that it knows where a program installed via source would store it's binaries and, most importantly, configuration files.
2. somehow capture package manager activity so that it knows where the programs binaries and configuration files are.
3. detect when a service is started or stopped or restarted...basically, detect the change in status of a service. How does Linux know when a service is triggered? Is a /proc file or something like that triggered?

Would a daemon coded in Python work here? Also, what are the best options to capture a commands activity? strace? gdb?

For #1, I thought of just having my program read the bottom of the man's to get the location of the config files but a lot of programs don't have such details man's on Linux :/

My aim is to basically make a little program that self documents so that, for example, if an admin decides to install the latest PHP on a web server, compiled from source since the package manager doesn't have the latest version, my program should save that information to a file somewhere.

Any ideas?
 

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LEARN ABOUT OSF1

timedsetup

timedsetup(8)						      System Manager's Manual						     timedsetup(8)

NAME

       timedsetup - Performs initial setup of the time server daemon (timed).

SYNOPSIS

       /usr/sbin/timedsetup

DESCRIPTION

       The timedsetup command is an interactive script that can be used to perform initial time service configuration for your system.

       By  default,  timed  does  not start at boot time.  The timedsetup script asks if you want the timed daemon to be started at boot time, and
       prompts you for any options to pass to the timed daemon whenever it is invoked.	The script then starts the timed daemon.

       For more information on the timed options, see the timed(8) reference page.

									  Note

       The timed daemon is provided for compatibility.	Tru64 UNIX also provides support for the Network Time Protocol	(NTP)  through	the  xntpd
       daemon.	 Compaq  recommends  you use NTP for time synchronization.  If your system is configured to run NTP, the timedsetup command passes
       the -E and -M options to the timed daemon by default.

       If you plan to run both the timed daemon and NTP, you should configure NTP first.

RESTRICTIONS

       In configurations with two or more hosts each connected to the same two or more subnetworks, only one of the host can run  the  timed  with
       the -M option.

FILES

       Specifies the command pathname The timed startup and shutdown script Specifies timed parameters pertinent to a specific system

SEE ALSO

       Commands: timed(8), xntpd(8)

																     timedsetup(8)
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