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Full Discussion: Daemon process
Top Forums Programming Daemon process Post 302857301 by inventsekar on Thursday 26th of September 2013 02:04:28 AM
Old 09-26-2013
Hi Sundaresh,
I am not sure exactly if this helps...but let me give an idea...
I assume you have a script which you wanted to run on background, only one instance of it.

# inside the script, you will add these few lines to check if the script is already running
Code:
COUNT=`ps -ef SCRIPT_NAME | wc -l`
if [ "$COUNT" -eq 0 ]
then
  # run the script
 /full/path/SCRIPT_NAME &
else
  echo "Already an instance of the script is running"
fi
exit 0


Last edited by Franklin52; 09-26-2013 at 03:11 AM.. Reason: Please use code tags
 

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

NAME
fcgiwrap - serve CGI applications over FastCGI SYNOPSIS
fcgiwrap [OPTIONS] DESCRIPTION
fcgiwrap is a simple server for running CGI applications over FastCGI. It hopes to provide clean CGI support to Nginx (and other web servers that may need it). OPTIONS
-c number Number of fcgiwrap processes to prefork. -s socket_url A URL for the listen socket to bind to. By default fcgiwrap expects a listen socket to be passed on file descriptor 0, matching the FastCGI convention. The recommended way to deploy fcgiwrap is to run it under a process manager that takes care of opening the socket. However, for simple configurations and one-off tests this option may be used. Valid socket_urls include unix:/path/to/unix/socket, tcp:dot.ted.qu.ad:port and tcp6:[ipv6_addr]:port. -h Show a help message and exit. ENVIRONMENT
When running, fcgiwrap evaluates these environment variables set by the web server calling an fcgi-script. The variables DOCUMENT_ROOT and SCRIPT_NAME will be concatenated and the resulting executable run as CGI script wrapped as FastCGI, with the remainder after the script name available as PATH_INFO. To disable PATH_INFO mangling, set up your web server to pass SCRIPT_FILENAME, which should contain the com- plete path to the script. Then PATH_INFO will not be modified. DOCUMENT_ROOT directory which the script resides in SCRIPT_NAME actual executable SCRIPT_FILENAME complete path to CGI script. When set, overrides DOCUMENT_ROOT and SCRIPT_NAME EXAMPLE
The fastest way to see fcgiwrap do something is to launch it at the command line like this: fcgiwrap -s unix:/var/run/fcgiwrap.sock Apart from potential permission problems etc., it should be ready to accept FastCGI requests and run CGI scripts. Most probably you will want to launch fcgiwrap by spawn-fcgi using a configuration like this: FCGI_SOCKET=/var/run/fcgiwrap.sock FCGI_PROGRAM=/usr/sbin/fcgiwrap FCGI_USER=nginx FCGI_GROUP=www FCGI_EXTRA_OPTIONS="-M 0700" ALLOWED_ENV="PATH" Nginx can be configured to have the arbitrary CGI cgit run as FastCGI as follows: location / { fastcgi_param DOCUMENT_ROOT /var/www/localhost/htdocs/cgit/; fastcgi_param SCRIPT_NAME cgit; fastcgi_pass unix:/var/run/fastcgi.sock; } AUTHOR
fcgiwrap was written by Grzegorz Nosek <root@localdomain.pl> with contributions by W-Mark Kubacki <wmark@hurrikane.de>. This manual page was written by Jordi Mallach <jordi@debian.org> (with contributions by Grzegorz Nosek) for the Debian project (and may be used by others). Jun 3, 2010 FCGIWRAP(8)
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