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Full Discussion: Need help to identify the flags by scripts.
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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LEARN ABOUT SUNOS

systemd-rc-local-generator

SYSTEMD-RC-LOCAL-GENERATOR(8)				    systemd-rc-local-generator				     SYSTEMD-RC-LOCAL-GENERATOR(8)

NAME

       systemd-rc-local-generator - Compatibility generator for starting /etc/rc.local and /usr/sbin/halt.local during boot and shutdown

SYNOPSIS

       /lib/systemd/system-generators/systemd-rc-local-generator

DESCRIPTION

       systemd-rc-local-generator is a generator that checks whether /etc/rc.local exists and is executable, and if it is pulls the
       rc-local.service unit into the boot process. This unit is responsible for running this script during late boot. Note that the script will
       be run with slightly different semantics than the original System V version, which was run "last" in the boot process, which is a concept
       that does not translate to systemd. The script is run after network.target, but in parallel with most other regular system services.

       systemd-rc-local-generator also checks whether /usr/sbin/halt.local exists and is executable, and if it is pulls the halt-local.service
       unit into the shutdown process. This unit is responsible for running this script during later shutdown.

       Support for both /etc/rc.local and /usr/sbin/halt.local is provided for compatibility with specific System V systems only. However, it is
       strongly recommended to avoid making use of these scripts today, and instead provide proper unit files with appropriate dependencies for
       any scripts to run during the boot or shutdown processes.

       systemd-rc-local-generator implements systemd.generator(7).

SEE ALSO

       systemd(1), systemctl(1)

systemd 237													     SYSTEMD-RC-LOCAL-GENERATOR(8)
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