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Full Discussion: [Solved] Script doesn't work..help?
Top Forums Shell Programming and Scripting [Solved] Script doesn't work..help? Post 302753801 by vbe on Wednesday 9th of January 2013 11:22:35 AM
Old 01-09-2013
I just put your script in order ( for me to read...):
Code:
#! /bin/bash
while true
do
   proc_num=$(ps a | grep yourscript | wc -l)
   echo "loop1: "proc_num=$proc_num
   sleep 2
   while (( $proc_num < 5 ))
      do
         echo "loop 2: "proc_num=$proc_num
         sleep 2
         yourscript &      #add a single process
         #sleep 1 # - this is for testing purpose... -#
         #let proc_num=$proc_num+1
      done
   echo " out of loop 1 "
   sleep 1
done
#let something else use the box done

Comment:
ps -a doesnt give the same as ps a
you were missing a space after second while...
My question is more on line launching yourscript: does it go in background like a daemon or not? if it doesnt I see your program being stuck at this point ( but I may be wrong since I dont know what program it is...)
Last edited by vbe; 01-09-2013 at 12:27 PM..
This User Gave Thanks to vbe For This Post:
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LEARN ABOUT OPENDARWIN

sleep

SLEEP(1)						    BSD General Commands Manual 						  SLEEP(1)

NAME

     sleep -- suspend execution for an interval of time

SYNOPSIS

     sleep seconds

DESCRIPTION

     The sleep command suspends execution for a minimum of seconds.

     If the sleep command receives a signal, it takes the standard action.

IMPLEMENTATION NOTES

     The SIGALRM signal is not handled specially by this implementation.

     The sleep command will accept and honor a non-integer number of specified seconds (with a '.' character as a decimal point).  This is a non-
     portable extension, and its use will nearly guarantee that a shell script will not execute properly on another system.

EXAMPLES

     To schedule the execution of a command for x number seconds later (with csh(1)):

	   (sleep 1800; sh command_file >& errors)&

     This incantation would wait a half hour before running the script command_file.  (See the at(1) utility.)

     To reiteratively run a command (with the csh(1)):

	   while (1)
		   if (! -r zzz.rawdata) then
			   sleep 300
		   else
			   foreach i (`ls *.rawdata`)
				   sleep 70
				   awk -f collapse_data $i >> results
			   end
			   break
		   endif
	   end

     The scenario for a script such as this might be: a program currently running is taking longer than expected to process a series of files, and
     it would be nice to have another program start processing the files created by the first program as soon as it is finished (when zzz.rawdata
     is created).  The script checks every five minutes for the file zzz.rawdata, when the file is found, then another portion processing is done
     courteously by sleeping for 70 seconds in between each awk job.

DIAGNOSTICS

     The sleep utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     nanosleep(2), sleep(3)

STANDARDS

     The sleep command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.

HISTORY

     A sleep command appeared in Version 4 AT&T UNIX.

BSD
								  April 18, 1994							       BSD
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