[SOLVED] How to Schedule a program in linux ??

r4jiv007 · 10-25-2011, 06:33 AM

hi der !!

i wanted to run an application every-time i issue a shutdown command ...
i mean the app will execute first and then the system will shutdown.

i searched a bit and every time i found at command which i think is not applicable here

is there any way to edit the shutdown menu!!!!
Any suggestion for that !!!!!

nenpa8lo · 10-25-2011, 06:46 AM

If I'm not mistaken this is how you do it:

Code:

ln -s /etc/init.d/<script> /etc/rc.d/rc5.d/K50<script>

K50<script> should execute it at shutdown.

deep27ak · 10-25-2011, 08:30 AM

Quote:

Originally Posted by r4jiv007

hi der !!

i wanted to run an application every-time i issue a shutdown command ...
i mean the app will execute first and then the system will shutdown.

i searched a bit and every time i found at command which i think is not applicable here

is there any way to edit the shutdown menu!!!!
Any suggestion for that !!!!!

you need to add your script in the following file

Code:

#cp example.sh /etc/init.d/

#ln -s /etc/init.d/example.sh /etc/rc0.d/K10example.sh  ------->0 runlevel for poweroff
#ln -s /etc/init.d/example.sh /etc/rc6.d/K10example.sh  ------->6 runlevel for restart

r4jiv007 · 10-25-2011, 09:32 AM

Quote:

Originally Posted by deep27ak

you need to add your script in the following file

Code:

#cp example.sh /etc/init.d/

#ln -s /etc/init.d/example.sh /etc/rc0.d/K10example.sh  ------->0 runlevel for poweroff
#ln -s /etc/init.d/example.sh /etc/rc6.d/K10example.sh  ------->6 runlevel for restart

what if i want to execute a binary file not the shell script ??
and can u please explain me your lines atleast give me a breif
thanks

nenpa8lo · 10-25-2011, 04:14 PM

You have to make a symbolic link 'ln -s' (google) to your script as deep27ak pointed out. If you want to run executable then the fastest way for you would be having a script which executes your binary

Code:

#/bin/bash
/path/to/your/binary/actualbinary

should do. Remember to give your scirpt .sh and make it executable (chmod command - google).

deep27ak · 10-27-2011, 01:31 AM

Quote:

Originally Posted by r4jiv007

what if i want to execute a binary file not the shell script ??
and can u please explain me your lines atleast give me a breif
thanks

there are files by the name of rc0, rc.1, rc.2 ....
and directories by the name of rc0.d, rc1.d rc2.d ........

which contains the services to be started

Code:

The naming is done on the basis of run level i.e. 
run level 0----> rc0.d
run level 5----> rc5.d

'K' and 'S' scripts are used to represent the type of execution
scripts starting with K are executed before S scripts
S stands for start and K stands for stop

Quote:

every file inside rcx.d is linked in /etc/init.d
So put your file in rcx.d and create a link to init.d

if you want to execute a binary file make it executable and do as I mentioned

best of luck

r4jiv007 · 10-28-2011, 03:13 AM

Quote:

Originally Posted by deep27ak

there are files by the name of rc0, rc.1, rc.2 ....
and directories by the name of rc0.d, rc1.d rc2.d ........

which contains the services to be started

Code:

The naming is done on the basis of run level i.e. 
run level 0----> rc0.d
run level 5----> rc5.d

'K' and 'S' scripts are used to represent the type of execution
scripts starting with K are executed before S scripts
S stands for start and K stands for stop

if you want to execute a binary file make it executable and do as I mentioned

best of luck

thanks man that was a good brief description .......

can you provide me link or somthing to know this kinda stuffs ..... it will be very helpful to me
thanks again

deep27ak · 10-28-2011, 03:20 AM

Quote:

Originally Posted by r4jiv007

thanks man that was a good brief description .......

can you provide me link or somthing to know this kinda stuffs ..... it will be very helpful to me
thanks again

this is something which you can easily get on google

I am sure you will get a bunch of sites including Wikipedia to help you out

and if you think your problem is fixed mark the thread as solved