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Top Forums Programming How to find if a process a daemon ? Post 302218836 by Perderabo on Sunday 27th of July 2008 08:57:08 AM
Old 07-27-2008
Quote:
Originally Posted by matrixmadhan
Code:
Daemons have no controlling terminal.
Non-daemons have a controlling terminal.

Agreed.
ppid doesn't matter.

But what about a process started as nohup process and detached from controlling terminal ?
It has no terminal attached, I don't think it can be called as a daemon.
Started as a nohup or not doesn't matter. Most well written daemons will explicitly ignore signals that they want to ignore and install handlers for signals that they want to receive.

But if it's detached from it's controlling terminal, it is a daemon. This is exactly what happens when you restart cron or inetd from the command line. Since you don't think that processes with no controlling terminals are daemons, what is your definition of a daemon?
 

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

NAME
lsmsad - Starts the Storage Administrator (SA) daemon SYNOPSIS
/usr/sbin/lsmsad DESCRIPTION
The SA daemon, lsmsad, is a process required by lsmsa, the SA graphical user interface (GUI). The daemon issues commands and obtains system information on behalf of SA. The SA daemon runs on a Tru64 UNIX system on which LSM is initialized and running. The SA client runs on any machine that supports the Java Runtime Environment. The SA daemon is automatically started at boot time. Under normal conditions, the daemon does not need to be run manually. If SA does not start during the boot process, enter: /sbin/init.d/lsmsa stop To restart SA, enter: /sbin/init.d/lsmsa start Only one SA daemon can be running on a system at a given time. If a second SA daemon attempts to start, it will fail. RESTRICTIONS
You must be root user to run lsmsad. FILES
The script that starts lsmsad at boot time. The command log file that tracks SA tasks. The access log file that tracks login to SA. The server log file that tracks server startup information and server errors. The log maintenance shell script that saves and compresses log files. SEE ALSO
lsmsa(8), volintro(8) lsmsad(8)
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