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Full Discussion: Scheduler program
Top Forums UNIX for Advanced & Expert Users Scheduler program Post 302136219 by p_aishwarya on Sunday 16th of September 2007 12:21:36 PM
Old 09-16-2007
Scheduler program
Hi,

what i need to do is build my own scheduler program.
I am supposed to display my own prompt. at this prompt i accept a command in the following format.

ls -l start 0:0:10:10 period 10 end 0:0:0:10

now this command should be executed in the background starting at 10 mins and 10 secs and should repeat and fork another ls -l after every 10 seconds since the period is of 10 secs. every ls -l should complete in the end time 10 secs or should be killed. ALL this is to be done in the background.

so my question is how do I start a process in the background from another process and keep it continuing till i end time expires. I also want to return to the foreground immediately after execution of each command. as in

1) $ ls -l start ... (i hit enter and command is thrown in background and keeps executing )
2) $ ps -ef (i am back to the prompt again and ready to accept a new command)
 

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LEARN ABOUT SUSE

lircmd

LIRCMD(8)								FSF								 LIRCMD(8)

NAME

       lircmd - LIRC mouse daemon translates infrared signals into mouse events

SYNOPSIS

       lircmd [options] [config-file]

DESCRIPTION

       This  daemon  can  simulate a MouseSystems, IntelliMouse or IMPS/2 type mouse. It gets the received buttons from lircd and converts them to
       mouse events. To make this possible, lircmd needs a config file located in /etc/lircmd.conf. In this file you have to determine which  but-
       ton  from  which  remote causes a mouse move or a mouse button click.  You can also specify a special button which activates or deactivates
       the mouse mode.

       -h --help
	      display this message

       -v --version
	      display version

       -n --nodaemon
	      don't fork to background

       -u --uinput
	      generate Linux input events

OPTIONS

       If you provide the --nodaemon option lircmd won't fork to background.

       On Linux systems the --uinput option will enable automatic generation of Linux input events. lircmd will open /dev/input/uinput and  inject
       the simulated mouse events into the Linux kernel rather than creating the /dev/lircm device.

FILES

       lircmd will use syslogd to output error messages. It depends on your system configuration where they will show up.

DAEMONS

       lircd  and  lircmd are daemons. You should start them in some init script depending on your system. There are some example scripts for dif-
       ferent distributions in the contrib directory. lircmd has to be started after lircd as it connects to the socket lircd provides.

       If you start lircd or lircmd from your shell prompt you will usually get back immediately to the prompt. Often people think that  the  pro-
       gram has died. But this is not an error. lircd and lircmd are daemons. Daemons always run in background.

SEE ALSO

       The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory.

lircmd 0.8.7pre1						     May 2010								 LIRCMD(8)
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