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Top Forums Shell Programming and Scripting Need help to identify the flags by scripts. Post 302321790 by bhargav20 on Tuesday 2nd of June 2009 06:16:03 AM
Old 06-02-2009
Need help to identify the flags by scripts.

Hi,

I have two different scripts sap_ftp.sh and sap_ftp_dd.sh which are running continously in background. I am using another script called start.sh to launch these two scripts.

Either one script will process files at a time . During that time other script will sleep.. Each script will create corresponding flag file while processing files

sap_ftp.sh script checks weather sap_ftp_dd.sh flag exists or not. If flag exists this script will go to sleep for 10 secs. After that again it wakes up and checks flag exists or not, If it does not sap_ftp.sh starts processing the files by creating the flag file.

This is same for sap_ftp_dd.sh . This scritp also checks is there any (sap_ftp.sh) flag exists. If this does not exists, it will start processing files or else goes to sleep for 10 secs..

I am facing a problem while identifying the flags...

Since i am launching both the scripts through different script. Both are getting launch at a time.. Both are checking for the flags. Both are not finding any thing. Both are inserting the flags at a time and both are deleting the flags at a time.

I tried launching the second script delayed by few seconds. but that also did not worked out..

kindly help me how can i able to make scripts to identify the flag.

Thanks
 

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DH_INSTALLINIT(1)						     Debhelper							 DH_INSTALLINIT(1)

NAME
dh_installinit - install init scripts and/or upstart jobs into package build directories SYNOPSIS
dh_installinit [debhelperoptions] [--name=name] [-n] [-R] [-r] [-d] [--params] DESCRIPTION
dh_installinit is a debhelper program that is responsible for installing init scripts with associated defaults files, as well as upstart job files into package build directories. It also automatically generates the postinst and postrm and prerm commands needed to set up the symlinks in /etc/rc*.d/ to start and stop the init scripts. FILES
debian/package.init If this exists, it is installed into etc/init.d/package in the package build directory. debian/package.default If this exists, it is installed into etc/default/package in the package build directory. debian/package.upstart If this exists, it is installed into etc/init/package.conf in the package build directory. OPTIONS
-n, --noscripts Do not modify postinst/postrm/prerm scripts. -o, --onlyscripts Only modify postinst/postrm/prerm scripts, do not actually install any init script, default files, or upstart job. May be useful if the init script or upstart job is shipped and/or installed by upstream in a way that doesn't make it easy to let dh_installinit find it. -R, --restart-after-upgrade Do not stop the init script until after the package upgrade has been completed. This is different than the default behavior, which stops the script in the prerm, and starts it again in the postinst. This can be useful for daemons that should not have a possibly long downtime during upgrade. But you should make sure that the daemon will not get confused by the package being upgraded while it's running before using this option. -r, --no-restart-on-upgrade Do not stop init script on upgrade. --no-start Do not start the init script on install or upgrade, or stop it on removal. Only call update-rc.d. Useful for rcS scripts. -d, --remove-d Remove trailing d from the name of the package, and use the result for the filename the upstart job file is installed as in etc/init/ , and for the filename the init script is installed as in etc/init.d and the default file is installed as in etc/default/ . This may be useful for daemons with names ending in d. (Note: this takes precedence over the --init-script parameter described below.) -uparams --update-rcd-params=params -- params Pass params to update-rc.d(8). If not specified, defaults will be passed to update-rc.d(8). --name=name Install the init script (and default file) as well as upstart job file using the filename name instead of the default filename, which is the package name. When this parameter is used, dh_installinit looks for and installs files named debian/package.name.init, debian/package.name.default and debian/package.name.upstart instead of the usual debian/package.init, debian/package.default and debian/package.upstart. --init-script=scriptname Use scriptname as the filename the init script is installed as in etc/init.d/ (and also use it as the filename for the defaults file, if it is installed). If you use this parameter, dh_installinit will look to see if a file in the debian/ directory exists that looks like package.scriptname and if so will install it as the init script in preference to the files it normally installs. This parameter is deprecated, use the --name parameter instead. This parameter is incompatible with the use of upstart jobs. --error-handler=function Call the named shell function if running the init script fails. The function should be provided in the prerm and postinst scripts, before the #DEBHELPER# token. NOTES
Note that this command is not idempotent. dh_prep(1) should be called between invocations of this command. Otherwise, it may cause multiple instances of the same text to be added to maintainer scripts. SEE ALSO
debhelper(7) This program is a part of debhelper. AUTHORS
Joey Hess <joeyh@debian.org> Steve Langasek <steve.langasek@canonical.com> 9.20120909 2012-04-10 DH_INSTALLINIT(1)
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