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Full Discussion: How to write daemon?
Top Forums Programming How to write daemon? Post 90063 by sg6876 on Friday 18th of November 2005 12:02:08 AM
Old 11-18-2005
Bug How to write daemon?

Hi ,

I want to know how to write a daemon process. I also want to know the concept behind daemon processes. Any material or sample program will be great Smilie .

Thanks in advance
-sg
 

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CGRULESENGD(8)							 libcgroup Manual						    CGRULESENGD(8)

NAME
cgrulesengd - control group rules daemon SYNOPSIS
cgrulesengd [options] DESCRIPTION
cgrulesengd is a daemon, which distributes processes to control groups. When any process changes its effective UID or GID, cgrulesengd inspects the list of rules loaded from the cgrules.conf file and moves the process to the appropriate control group. The list of rules is read during the daemon startup is are cached in the daemon's memory. The daemon reloads the list of rules when it receives SIGUSR2 signal. The daemon opens a standard unix socket to receive 'sticky' requests from cgexec. OPTIONS
-h|--help Display help. -f <path>|--logfile=<path> Write log messages to the given log file. When '-' is used as <path>, log messages are written to the standard output. If '-f' and '-s' are used together, the logs are sent to both destinations. -s[facility]|--syslog=[facility] Write log messages to syslog. The default facility is DAEMON. If '-f' and '-s' are used together, the logs are sent to both destina- tions. -n|--nodaemon Don't fork the daemon, stay in the foreground. -v|--verbose Display more log messages. This option can be used twice to enable more verbose log messages. -q|--quiet Display less log messages. This option can be used twice to enable even less log messages and to only log errors. -Q|--nolog Disable logging. -d|--debug Equivalent to '-nvvf -', i.e. don't fork the daemon, display all log messages and write them to the standard output. -u <user>|--socket-user=<user> -g <group>|--socket-group=<group> Set the owner of cgrulesengd socket. Assumes that cgexec runs with proper suid permissions so it can write to the socket when cgexec --sticky is used. FILES
/etc/cgrules.conf the default libcgroup configuration file SEE ALSO
cgrules.conf (5) Linux 2009-02-18 CGRULESENGD(8)
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